diff --git a/DEVELOPER.md b/DEVELOPER.md
index b365fbcda1..b6efa424d3 100644
--- a/DEVELOPER.md
+++ b/DEVELOPER.md
@@ -93,9 +93,9 @@ Most tests will benefit from using this template as a starting point:
 
 ```ts
 import "reflect-metadata";
-import {createTestingConnections, closeTestingConnections, reloadTestingDatabases} from "../../utils/test-utils";
-import {Connection} from "../../../src/connection/Connection";
-import {expect} from "chai";
+import { createTestingConnections, closeTestingConnections, reloadTestingDatabases } from "../../utils/test-utils";
+import { Connection } from "../../../src/connection/Connection";
+import { expect } from "chai";
 
 describe("github issues > #<issue number> <issue title>", () => {
 
diff --git a/README.md b/README.md
index aa40f1cf42..d3fc8216bf 100644
--- a/README.md
+++ b/README.md
@@ -83,7 +83,7 @@ And more...
 With TypeORM your models look like this:
 
 ```typescript
-import {Entity, PrimaryGeneratedColumn, Column} from "typeorm";
+import { Entity, PrimaryGeneratedColumn, Column } from "typeorm";
 
 @Entity()
 export class User {
@@ -124,7 +124,7 @@ await repository.remove(timber);
 Alternatively, if you prefer to use the `ActiveRecord` implementation, you can use it as well:
 
 ```typescript
-import {Entity, PrimaryGeneratedColumn, Column, BaseEntity} from "typeorm";
+import { Entity, PrimaryGeneratedColumn, Column, BaseEntity } from "typeorm";
 
 @Entity()
 export class User extends BaseEntity {
@@ -373,7 +373,7 @@ You can load/insert/update/remove and perform other operations with them.
 Let's make our `Photo` model as an entity:
 
 ```typescript
-import {Entity} from "typeorm";
+import { Entity } from "typeorm";
 
 @Entity()
 export class Photo {
@@ -396,7 +396,7 @@ To add database columns, you simply need to decorate an entity's properties you
 with a `@Column` decorator.
 
 ```typescript
-import {Entity, Column} from "typeorm";
+import { Entity, Column } from "typeorm";
 
 @Entity()
 export class Photo {
@@ -436,7 +436,7 @@ This is a requirement and you can't avoid it.
 To make a column a primary key, you need to use `@PrimaryColumn` decorator.
 
 ```typescript
-import {Entity, Column, PrimaryColumn} from "typeorm";
+import { Entity, Column, PrimaryColumn } from "typeorm";
 
 @Entity()
 export class Photo {
@@ -467,7 +467,7 @@ Now, let's say you want your id column to be auto-generated (this is known as au
 To do that, you need to change the `@PrimaryColumn` decorator to a `@PrimaryGeneratedColumn` decorator:
 
 ```typescript
-import {Entity, Column, PrimaryGeneratedColumn} from "typeorm";
+import { Entity, Column, PrimaryGeneratedColumn } from "typeorm";
 
 @Entity()
 export class Photo {
@@ -500,7 +500,7 @@ We don't want all our columns to be limited varchars or integers.
 Let's setup correct data types:
 
 ```typescript
-import {Entity, Column, PrimaryGeneratedColumn} from "typeorm";
+import { Entity, Column, PrimaryGeneratedColumn } from "typeorm";
 
 @Entity()
 export class Photo {
@@ -537,8 +537,8 @@ Now, when our entity is created, let's create an `index.ts` (or `app.ts` whateve
 
 ```typescript
 import "reflect-metadata";
-import {createConnection} from "typeorm";
-import {Photo} from "./entity/Photo";
+import { createConnection } from "typeorm";
+import { Photo } from "./entity/Photo";
 
 createConnection({
     type: "mysql",
@@ -574,7 +574,7 @@ Later, when we create more entities we need to add them to the entities in our c
 This is not very convenient, so instead we can set up the whole directory, from where all entities will be connected and used in our connection:
 
 ```typescript
-import {createConnection} from "typeorm";
+import { createConnection } from "typeorm";
 
 createConnection({
     type: "mysql",
@@ -622,8 +622,8 @@ Now if you run your `index.ts`, a connection with database will be initialized a
 Now let's create a new photo to save it in the database:
 
 ```typescript
-import {createConnection} from "typeorm";
-import {Photo} from "./entity/Photo";
+import { createConnection } from "typeorm";
+import { Photo } from "./entity/Photo";
 
 createConnection(/*...*/).then(connection => {
 
@@ -652,8 +652,8 @@ It's not a new copy of the object, it modifies its "id" and returns it.
 Let's take advantage of the latest ES8 (ES2017) features and use async/await syntax instead:
 
 ```typescript
-import {createConnection} from "typeorm";
-import {Photo} from "./entity/Photo";
+import { createConnection } from "typeorm";
+import { Photo } from "./entity/Photo";
 
 createConnection(/*...*/).then(async connection => {
 
@@ -678,8 +678,8 @@ Using entity manager you can manipulate any entity in your app.
 For example, let's load our saved entity:
 
 ```typescript
-import {createConnection} from "typeorm";
-import {Photo} from "./entity/Photo";
+import { createConnection } from "typeorm";
+import { Photo } from "./entity/Photo";
 
 createConnection(/*...*/).then(async connection => {
 
@@ -702,8 +702,8 @@ When you deal with entities a lot, Repositories are more convenient to use than
 
 
 ```typescript
-import {createConnection} from "typeorm";
-import {Photo} from "./entity/Photo";
+import { createConnection } from "typeorm";
+import { Photo } from "./entity/Photo";
 
 createConnection(/*...*/).then(async connection => {
 
@@ -732,8 +732,8 @@ Learn more about Repository [here](./docs/working-with-repository.md).
 Let's try more load operations using the Repository:
 
 ```typescript
-import {createConnection} from "typeorm";
-import {Photo} from "./entity/Photo";
+import { createConnection } from "typeorm";
+import { Photo } from "./entity/Photo";
 
 createConnection(/*...*/).then(async connection => {
 
@@ -765,8 +765,8 @@ createConnection(/*...*/).then(async connection => {
 Now let's load a single photo from the database, update it and save it:
 
 ```typescript
-import {createConnection} from "typeorm";
-import {Photo} from "./entity/Photo";
+import { createConnection } from "typeorm";
+import { Photo } from "./entity/Photo";
 
 createConnection(/*...*/).then(async connection => {
 
@@ -785,8 +785,8 @@ Now photo with `id = 1` will be updated in the database.
 Now let's remove our photo from the database:
 
 ```typescript
-import {createConnection} from "typeorm";
-import {Photo} from "./entity/Photo";
+import { createConnection } from "typeorm";
+import { Photo } from "./entity/Photo";
 
 createConnection(/*...*/).then(async connection => {
 
@@ -805,8 +805,8 @@ Let's create a one-to-one relation with another class.
 Let's create a new class in `PhotoMetadata.ts`. This PhotoMetadata class is supposed to contain our photo's additional meta-information:
 
 ```typescript
-import {Entity, Column, PrimaryGeneratedColumn, OneToOne, JoinColumn} from "typeorm";
-import {Photo} from "./Photo";
+import { Entity, Column, PrimaryGeneratedColumn, OneToOne, JoinColumn } from "typeorm";
+import { Photo } from "./Photo";
 
 @Entity()
 export class PhotoMetadata {
@@ -867,9 +867,9 @@ If you run the app, you'll see a newly generated table, and it will contain a co
 Now let's save a photo, its metadata and attach them to each other.
 
 ```typescript
-import {createConnection} from "typeorm";
-import {Photo} from "./entity/Photo";
-import {PhotoMetadata} from "./entity/PhotoMetadata";
+import { createConnection } from "typeorm";
+import { Photo } from "./entity/Photo";
+import { PhotoMetadata } from "./entity/PhotoMetadata";
 
 createConnection(/*...*/).then(async connection => {
 
@@ -915,8 +915,8 @@ To fix this issue we should add an inverse relation, and make relations between
 Let's modify our entities:
 
 ```typescript
-import {Entity, Column, PrimaryGeneratedColumn, OneToOne, JoinColumn} from "typeorm";
-import {Photo} from "./Photo";
+import { Entity, Column, PrimaryGeneratedColumn, OneToOne, JoinColumn } from "typeorm";
+import { Photo } from "./Photo";
 
 @Entity()
 export class PhotoMetadata {
@@ -930,8 +930,8 @@ export class PhotoMetadata {
 ```
 
 ```typescript
-import {Entity, Column, PrimaryGeneratedColumn, OneToOne} from "typeorm";
-import {PhotoMetadata} from "./PhotoMetadata";
+import { Entity, Column, PrimaryGeneratedColumn, OneToOne } from "typeorm";
+import { PhotoMetadata } from "./PhotoMetadata";
 
 @Entity()
 export class Photo {
@@ -960,9 +960,9 @@ Let's use `find*` methods first.
 `find*` methods allow you to specify an object with the `FindOneOptions` / `FindManyOptions` interface.
 
 ```typescript
-import {createConnection} from "typeorm";
-import {Photo} from "./entity/Photo";
-import {PhotoMetadata} from "./entity/PhotoMetadata";
+import { createConnection } from "typeorm";
+import { Photo } from "./entity/Photo";
+import { PhotoMetadata } from "./entity/PhotoMetadata";
 
 createConnection(/*...*/).then(async connection => {
 
@@ -980,9 +980,9 @@ Using find options is good and dead simple, but if you need a more complex query
 `QueryBuilder` allows more complex queries to be used in an elegant way:
 
 ```typescript
-import {createConnection} from "typeorm";
-import {Photo} from "./entity/Photo";
-import {PhotoMetadata} from "./entity/PhotoMetadata";
+import { createConnection } from "typeorm";
+import { Photo } from "./entity/Photo";
+import { PhotoMetadata } from "./entity/PhotoMetadata";
 
 createConnection(/*...*/).then(async connection => {
 
@@ -1061,8 +1061,8 @@ Let's say a photo has one author, and each author can have many photos.
 First, let's create an `Author` class:
 
 ```typescript
-import {Entity, Column, PrimaryGeneratedColumn, OneToMany, JoinColumn} from "typeorm";
-import {Photo} from "./Photo";
+import { Entity, Column, PrimaryGeneratedColumn, OneToMany, JoinColumn } from "typeorm";
+import { Photo } from "./Photo";
 
 @Entity()
 export class Author {
@@ -1084,9 +1084,9 @@ export class Author {
 Now let's add the owner side of the relation into the Photo entity:
 
 ```typescript
-import {Entity, Column, PrimaryGeneratedColumn, ManyToOne} from "typeorm";
-import {PhotoMetadata} from "./PhotoMetadata";
-import {Author} from "./Author";
+import { Entity, Column, PrimaryGeneratedColumn, ManyToOne } from "typeorm";
+import { PhotoMetadata } from "./PhotoMetadata";
+import { Author } from "./Author";
 
 @Entity()
 export class Photo {
@@ -1135,7 +1135,7 @@ Let's say a photo can be in many albums, and each album can contain many photos.
 Let's create an `Album` class:
 
 ```typescript
-import {Entity, PrimaryGeneratedColumn, Column, ManyToMany, JoinTable} from "typeorm";
+import { Entity, PrimaryGeneratedColumn, Column, ManyToMany, JoinTable } from "typeorm";
 
 @Entity()
 export class Album {
diff --git a/docs/find-options.md b/docs/find-options.md
index b506594de2..693494f8d5 100644
--- a/docs/find-options.md
+++ b/docs/find-options.md
@@ -278,6 +278,22 @@ will execute following query:
 SELECT * FROM "post" WHERE "title" LIKE '%out #%'
 ```
 
+* `ILike`
+
+```ts
+import {ILike} from "typeorm";
+
+const loadedPosts = await connection.getRepository(Post).find({
+    title: ILike("%out #%")
+});
+```
+
+will execute following query:
+
+```sql
+SELECT * FROM "post" WHERE "title" ILIKE '%out #%'
+```
+
 * `Between`
 
 ```ts
diff --git a/docs/migrations.md b/docs/migrations.md
index 84e8731a51..2c159bdb3a 100644
--- a/docs/migrations.md
+++ b/docs/migrations.md
@@ -144,7 +144,7 @@ Once you have a migration to run on production, you can run them using a CLI com
 typeorm migration:run
 ```
 
-**`typeorm migration:create` and `typeorm migration:generate` will create `.ts` files. The `migration:run` and `migration:revert` commands only work on `.js` files. Thus the typescript files need to be compiled before running the commands.** Alternatively you can use `ts-node` in conjunction with `typeorm` to run `.ts` migration files.
+**`typeorm migration:create` and `typeorm migration:generate` will create `.ts` files, unless you use the `o` flag (see more in [Generating migrations](#generating-migrations)). The `migration:run` and `migration:revert` commands only work on `.js` files. Thus the typescript files need to be compiled before running the commands.** Alternatively you can use `ts-node` in conjunction with `typeorm` to run `.ts` migration files.
 
 Example with `ts-node`:
 ```
@@ -194,8 +194,25 @@ export class PostRefactoringTIMESTAMP implements MigrationInterface {
 }
 ```
 
+Alternatively you can also output your migrations as Javascript files using the `o` (alias for `--outputJs`) flag. This is useful for Javascript only projects in which TypeScript additional packages are not installed. This command, will generate a new migration file `{TIMESTAMP}-PostRefactoring.js` with the following content:
+
+```javascript
+const { MigrationInterface, QueryRunner } = require("typeorm");
+
+module.exports = class PostRefactoringTIMESTAMP {
+
+    async up(queryRunner) {
+        await queryRunner.query(`ALTER TABLE "post" ALTER COLUMN "title" RENAME TO "name"`);
+    }
+
+    async down(queryRunner) {
+        await queryRunner.query(`ALTER TABLE "post" ALTER COLUMN "title" RENAME TO "name"`);
+    }
+}
+```
+
 See, you don't need to write the queries on your own.
-The rule of thumb for generating migrations is that you generate them after "each" change you made to your models. To apply multi-line formatting to your generated migration queries, use the `p` (alias for `--pretty`) flag.
+The rule of thumb for generating migrations is that you generate them after **each** change you made to your models. To apply multi-line formatting to your generated migration queries, use the `p` (alias for `--pretty`) flag. 
 
 ## Connection option
 If you need to run/revert your migrations for another connection rather than the default, use the `-c` (alias for `--connection`) and pass the config name as an argument
diff --git a/docs/using-cli.md b/docs/using-cli.md
index 35e193f5ac..46c4f0d639 100644
--- a/docs/using-cli.md
+++ b/docs/using-cli.md
@@ -35,7 +35,7 @@ npm install -g ts-node
 
 Add typeorm command under scripts section in package.json
 ```
-"scripts" {
+"scripts": {
     ...
     "typeorm": "node --require ts-node/register ./node_modules/typeorm/cli.js"    
 }
diff --git a/docs/zh_CN/find-options.md b/docs/zh_CN/find-options.md
index 1b21e6837f..ecf062fd5f 100644
--- a/docs/zh_CN/find-options.md
+++ b/docs/zh_CN/find-options.md
@@ -261,6 +261,22 @@ const loadedPosts = await connection.getRepository(Post).find({
 SELECT * FROM "post" WHERE "title" LIKE '%out #%'
 ```
 
+-   `ILike`
+
+```ts
+import { ILike } from "typeorm";
+
+const loadedPosts = await connection.getRepository(Post).find({
+    title: ILike("%out #%")
+});
+```
+
+将执行以下查询：
+
+```sql
+SELECT * FROM "post" WHERE "title" ILIKE '%out #%'
+```
+
 -   `Between`
 
 ```ts
diff --git a/package-lock.json b/package-lock.json
index f209623a3c..1309a8caa1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,24 +1,16 @@
 {
   "name": "@flowaccount/typeorm",
-  "version": "0.2.34",
+  "version": "0.2.37",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
     "@azure/abort-controller": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/@azure/abort-controller/-/abort-controller-1.0.2.tgz",
-      "integrity": "sha512-XUyTo+bcyxHEf+jlN2MXA7YU9nxVehaubngHV1MIZZaqYmZqykkoeAz/JMMEeR7t3TcyDwbFa3Zw8BZywmIx4g==",
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/@azure/abort-controller/-/abort-controller-1.0.3.tgz",
+      "integrity": "sha512-kCibMwqffnwlw3c+e879rCE1Am1I2BfhjOeO54XNA8i/cEuzktnBQbTrzh67XwibHO05YuNgZzSWy9ocVfFAGw==",
       "dev": true,
       "requires": {
         "tslib": "^2.0.0"
-      },
-      "dependencies": {
-        "tslib": {
-          "version": "2.1.0",
-          "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.1.0.tgz",
-          "integrity": "sha512-hcVC3wYEziELGGmEEXue7D75zbwIIVUMWAVbHItGPx0ziyXxrOMQx4rQEVEV45Ut/1IotuEvwqPopzIOkDMf0A==",
-          "dev": true
-        }
       }
     },
     "@azure/core-auth": {
@@ -29,49 +21,46 @@
       "requires": {
         "@azure/abort-controller": "^1.0.0",
         "tslib": "^2.0.0"
-      },
-      "dependencies": {
-        "tslib": {
-          "version": "2.1.0",
-          "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.1.0.tgz",
-          "integrity": "sha512-hcVC3wYEziELGGmEEXue7D75zbwIIVUMWAVbHItGPx0ziyXxrOMQx4rQEVEV45Ut/1IotuEvwqPopzIOkDMf0A==",
-          "dev": true
-        }
       }
     },
     "@azure/ms-rest-azure-env": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/@azure/ms-rest-azure-env/-/ms-rest-azure-env-2.0.0.tgz",
-      "integrity": "sha512-dG76W7ElfLi+fbTjnZVGj+M9e0BIEJmRxU6fHaUQ12bZBe8EJKYb2GV50YWNaP2uJiVQ5+7nXEVj1VN1UQtaEw==",
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/@azure/ms-rest-azure-env/-/ms-rest-azure-env-1.1.2.tgz",
+      "integrity": "sha512-l7z0DPCi2Hp88w12JhDTtx5d0Y3+vhfE7JKJb9O7sEz71Cwp053N8piTtTnnk/tUor9oZHgEKi/p3tQQmLPjvA==",
       "dev": true
     },
     "@azure/ms-rest-js": {
-      "version": "2.2.3",
-      "resolved": "https://registry.npmjs.org/@azure/ms-rest-js/-/ms-rest-js-2.2.3.tgz",
-      "integrity": "sha512-sXOhOu/37Tr8428f32Jwuwga975Xw64pYg1UeUwOBMhkNgtn5vUuNRa3fhmem+I6f8EKoi6hOsYDFlaHeZ52jA==",
+      "version": "1.11.2",
+      "resolved": "https://registry.npmjs.org/@azure/ms-rest-js/-/ms-rest-js-1.11.2.tgz",
+      "integrity": "sha512-2AyQ1IKmLGKW7DU3/x3TsTBzZLcbC9YRI+yuDPuXAQrv3zar340K9wsxU413kHFIDjkWNCo9T0w5VtwcyWxhbQ==",
       "dev": true,
       "requires": {
         "@azure/core-auth": "^1.1.4",
-        "@types/node-fetch": "^2.3.7",
-        "@types/tunnel": "0.0.1",
-        "abort-controller": "^3.0.0",
-        "form-data": "^2.5.0",
-        "node-fetch": "^2.6.0",
-        "tough-cookie": "^3.0.1",
-        "tslib": "^1.10.0",
+        "axios": "^0.21.1",
+        "form-data": "^2.3.2",
+        "tough-cookie": "^2.4.3",
+        "tslib": "^1.9.2",
         "tunnel": "0.0.6",
-        "uuid": "^3.3.2",
+        "uuid": "^3.2.1",
         "xml2js": "^0.4.19"
+      },
+      "dependencies": {
+        "tslib": {
+          "version": "1.14.1",
+          "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.14.1.tgz",
+          "integrity": "sha512-Xni35NKzjgMrwevysHTCArtLDpPvye8zV/0E4EyYn43P7/7qvQwPh9BGkHewbMulVntbigmcT7rdX3BNo9wRJg==",
+          "dev": true
+        }
       }
     },
     "@azure/ms-rest-nodeauth": {
-      "version": "3.0.6",
-      "resolved": "https://registry.npmjs.org/@azure/ms-rest-nodeauth/-/ms-rest-nodeauth-3.0.6.tgz",
-      "integrity": "sha512-2twuzsXHdKMzEFI2+Sr82o6yS4ppNGZceYwil8PFo+rJxOZIoBm9e0//YC+dKilV/3F+6K/HuW8LdskDrJEQWA==",
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/@azure/ms-rest-nodeauth/-/ms-rest-nodeauth-2.0.2.tgz",
+      "integrity": "sha512-KmNNICOxt3EwViAJI3iu2VH8t8BQg5J2rSAyO4IUYLF9ZwlyYsP419pdvl4NBUhluAP2cgN7dfD2V6E6NOMZlQ==",
       "dev": true,
       "requires": {
-        "@azure/ms-rest-azure-env": "^2.0.0",
-        "@azure/ms-rest-js": "^2.0.4",
+        "@azure/ms-rest-azure-env": "^1.1.2",
+        "@azure/ms-rest-js": "^1.8.7",
         "adal-node": "^0.1.28"
       }
     },
@@ -91,9 +80,9 @@
       "dev": true
     },
     "@babel/highlight": {
-      "version": "7.12.13",
-      "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.12.13.tgz",
-      "integrity": "sha512-kocDQvIbgMKlWxXe9fof3TQ+gkIPOUSEYhJjqUjvKMez3krV7vbzYCDq39Oj11UAVK7JqPVGQPlgE85dPNlQww==",
+      "version": "7.13.8",
+      "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.13.8.tgz",
+      "integrity": "sha512-4vrIhfJyfNf+lCtXC2ck1rKSzDwciqF7IWFhXXrSOUC2O5DrVp+w4c6ed4AllTxhTkUP5x2tYj41VaxdVMMRDw==",
       "dev": true,
       "requires": {
         "@babel/helper-validator-identifier": "^7.12.11",
@@ -154,9 +143,9 @@
       }
     },
     "@eslint/eslintrc": {
-      "version": "0.3.0",
-      "resolved": "https://registry.npmjs.org/@eslint/eslintrc/-/eslintrc-0.3.0.tgz",
-      "integrity": "sha512-1JTKgrOKAHVivSvOYw+sJOunkBjUOvjqWk1DPja7ZFhIS2mX/4EgTT8M7eTK9jrKhL/FvXXEbQwIs3pg1xp3dg==",
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/@eslint/eslintrc/-/eslintrc-0.4.0.tgz",
+      "integrity": "sha512-2ZPCc+uNbjV5ERJr+aKSPRwZgKd2z11x0EgLvb1PURmUrn9QNRXFqje0Ldq454PfAVyaJYyrDvvIKSFP4NnBog==",
       "dev": true,
       "requires": {
         "ajv": "^6.12.4",
@@ -166,17 +155,35 @@
         "ignore": "^4.0.6",
         "import-fresh": "^3.2.1",
         "js-yaml": "^3.13.1",
-        "lodash": "^4.17.20",
         "minimatch": "^3.0.4",
         "strip-json-comments": "^3.1.1"
       },
       "dependencies": {
+        "argparse": {
+          "version": "1.0.10",
+          "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.10.tgz",
+          "integrity": "sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==",
+          "dev": true,
+          "requires": {
+            "sprintf-js": "~1.0.2"
+          }
+        },
         "ignore": {
           "version": "4.0.6",
           "resolved": "https://registry.npmjs.org/ignore/-/ignore-4.0.6.tgz",
           "integrity": "sha512-cyFDKrqc/YdcWFniJhzI42+AzS+gNwmUzOSFcRCQYwySuBBBy/KjuxWLZ/FHEH6Moq1NizMOBWyTcv8O4OZIMg==",
           "dev": true
         },
+        "js-yaml": {
+          "version": "3.14.1",
+          "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.14.1.tgz",
+          "integrity": "sha512-okMH7OXXJ7YrN9Ok3/SXrnu4iX9yOk+25nqX4imS2npuvTYDmo/QEZoqwZkYaIDk3jVvBOTOIEgEhaLOynBS9g==",
+          "dev": true,
+          "requires": {
+            "argparse": "^1.0.7",
+            "esprima": "^4.0.0"
+          }
+        },
         "strip-json-comments": {
           "version": "3.1.1",
           "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-3.1.1.tgz",
@@ -186,41 +193,32 @@
       }
     },
     "@gulp-sourcemaps/identity-map": {
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@@ -11033,6 +10343,20 @@
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       "dev": true
+    },
+    "zen-observable": {
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+      "resolved": "https://registry.npmjs.org/zen-observable/-/zen-observable-0.8.15.tgz",
+      "integrity": "sha512-PQ2PC7R9rslx84ndNBZB/Dkv8V8fZEpk83RLgXtYd0fwUgEjseMn1Dgajh2x6S8QbZAFa9p2qVCEuYZNgve0dQ=="
+    },
+    "zen-observable-ts": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/zen-observable-ts/-/zen-observable-ts-1.0.0.tgz",
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+      "requires": {
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+      }
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   }
-}
+}
\ No newline at end of file
diff --git a/package.json b/package.json
index cd7acbab47..533f824943 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@flowaccount/typeorm",
   "private": true,
-  "version": "0.2.34",
+  "version": "0.2.37",
   "description": "Data-Mapper ORM for TypeScript, ES7, ES6, ES5. Supports MySQL, PostgreSQL, MariaDB, SQLite, MS SQL Server, Oracle, MongoDB databases.",
   "license": "MIT",
   "readmeFilename": "README.md",
@@ -58,79 +58,80 @@
   ],
   "devDependencies": {
     "@types/app-root-path": "^1.2.4",
-    "@types/chai": "^4.2.0",
+    "@types/chai": "^4.2.15",
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     "@types/debug": "^4.1.5",
     "@types/dotenv": "^8.2.0",
-    "@types/js-yaml": "^3.12.5",
+    "@types/js-yaml": "^4.0.0",
     "@types/mkdirp": "^1.0.1",
-    "@types/mocha": "^8.0.3",
-    "@types/node": "^14.6.4",
+    "@types/mocha": "^8.2.1",
+    "@types/node": "^14.14.31",
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-    "better-sqlite3": "^7.1.0",
-    "chai": "^4.2.0",
+    "@types/sinon": "^9.0.10",
+    "@types/source-map-support": "^0.5.3",
+    "@types/xml2js": "^0.4.8",
+    "@types/yargs": "^16.0.0",
+    "@typescript-eslint/eslint-plugin": "^4.15.2",
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-    "del": "^5.1.0",
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+    "conventional-changelog-angular": "^5.0.12",
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+    "eslint": "^7.20.0",
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-    "gulp-mocha": "^7.0.2",
+    "gulp-mocha": "^8.0.0",
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+    "husky": "^5.1.1",
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+    "mongodb": "^3.6.4",
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     "mysql": "^2.18.1",
-    "mysql2": "^2.1.0",
-    "oracledb": "^5.0.0",
-    "pg": "^8.3.0",
+    "mysql2": "^2.2.5",
+    "oracledb": "^5.1.0",
+    "pg": "^8.5.1",
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     "rimraf": "^3.0.2",
-    "sinon": "^9.0.0",
+    "sinon": "^9.2.4",
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-    "source-map-support": "^0.5.16",
-    "sql.js": "^1.3.2",
-    "sqlite3": "^5.0.0",
-    "ts-node": "^9.0.0",
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+    "typescript": "^4.2.2"
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   "dependencies": {
-    "@sqltools/formatter": "1.2.2",
+    "@sqltools/formatter": "^1.2.2",
     "app-root-path": "^3.0.0",
-    "buffer": "^5.5.0",
+    "buffer": "^6.0.3",
     "chalk": "^4.1.0",
     "cli-highlight": "^2.1.10",
-    "debug": "^4.1.1",
+    "debug": "^4.3.1",
     "dotenv": "^8.2.0",
     "glob": "^7.1.6",
-    "js-yaml": "^3.14.0",
+    "js-yaml": "^4.0.0",
     "mkdirp": "^1.0.4",
     "reflect-metadata": "^0.1.13",
     "sha.js": "^2.4.11",
-    "tslib": "^1.13.0",
+    "tslib": "^2.1.0",
     "xml2js": "^0.4.23",
-    "yargonaut": "^1.1.2",
-    "yargs": "^16.0.3"
+    "yargonaut": "^1.1.4",
+    "yargs": "^16.2.0",
+    "zen-observable-ts": "^1.0.0"
   },
   "lint-staged": {
     "*.ts": [
diff --git a/sample/sample11-all-types-entity/app.ts b/sample/sample11-all-types-entity/app.ts
index efa517364a..a1fc3e8dd7 100644
--- a/sample/sample11-all-types-entity/app.ts
+++ b/sample/sample11-all-types-entity/app.ts
@@ -44,8 +44,10 @@ createConnection(options).then(connection => {
         .save(entity)
         .then(entity => {
             console.log("EverythingEntity has been saved. Lets insert a new one to update it later");
-            delete entity.id;
-            return postRepository.save(entity);
+            return postRepository.save({
+                ...entity,
+                id: undefined
+            }) as Promise<EverythingEntity>;
         })
         .then(entity => {
             console.log("Second entity has been inserted. Lets update it");
@@ -74,9 +76,10 @@ createConnection(options).then(connection => {
         })
         .then(entity => {
             console.log("Entity has been updated. Persist once again to make find and remove then");
-
-            delete entity.id;
-            return postRepository.save(entity);
+            return postRepository.save({
+                ...entity,
+                id: undefined
+            }) as Promise<EverythingEntity>;
         })
         .then(entity => {
             return postRepository.findOne(entity.id);
diff --git a/sample/sample2-one-to-one/entity/Post.ts b/sample/sample2-one-to-one/entity/Post.ts
index 310c3bf40f..b34b035a8c 100644
--- a/sample/sample2-one-to-one/entity/Post.ts
+++ b/sample/sample2-one-to-one/entity/Post.ts
@@ -26,13 +26,13 @@ export class Post {
     @JoinColumn()
     category: PostCategory;
 
-    // post has relation with details. cascade inserts here means if new PostDetails instance will be set to this 
+    // post has relation with details. cascade inserts here means if new PostDetails instance will be set to this
     // relation it will be inserted automatically to the db when you save this Post entity
     @OneToOne(type => PostDetails, details => details.post, {
         cascade: ["insert"]
     })
     @JoinColumn()
-    details: PostDetails;
+    details?: PostDetails;
 
     // post has relation with details. cascade update here means if new PostDetail instance will be set to this relation
     // it will be inserted automatically to the db when you save this Post entity
@@ -60,4 +60,4 @@ export class Post {
     @JoinColumn()
     author: PostAuthor;
 
-}
\ No newline at end of file
+}
diff --git a/sample/sample3-many-to-one/entity/Post.ts b/sample/sample3-many-to-one/entity/Post.ts
index 71fc110366..22d44b2d26 100644
--- a/sample/sample3-many-to-one/entity/Post.ts
+++ b/sample/sample3-many-to-one/entity/Post.ts
@@ -24,12 +24,12 @@ export class Post {
     })
     category: PostCategory;
 
-    // post has relation with details. cascade inserts here means if new PostDetails instance will be set to this 
+    // post has relation with details. cascade inserts here means if new PostDetails instance will be set to this
     // relation it will be inserted automatically to the db when you save this Post entity
     @ManyToOne(type => PostDetails, details => details.posts, {
         cascade: ["insert"]
     })
-    details: PostDetails;
+    details?: PostDetails;
 
     // post has relation with details. cascade update here means if new PostDetail instance will be set to this relation
     // it will be inserted automatically to the db when you save this Post entity
@@ -53,4 +53,4 @@ export class Post {
     @ManyToOne(type => PostAuthor, author => author.posts)
     author: PostAuthor;
 
-}
\ No newline at end of file
+}
diff --git a/src/commands/InitCommand.ts b/src/commands/InitCommand.ts
index 62922a30df..7ad82b5056 100644
--- a/src/commands/InitCommand.ts
+++ b/src/commands/InitCommand.ts
@@ -1,8 +1,9 @@
-import {CommandUtils} from "./CommandUtils";
-import {ObjectLiteral} from "../common/ObjectLiteral";
+import { CommandUtils } from "./CommandUtils";
+import { ObjectLiteral } from "../common/ObjectLiteral";
 import * as path from "path";
 import * as yargs from "yargs";
 import chalk from "chalk";
+import { exec } from "child_process";
 
 /**
  * Generates a new project with TypeORM.
@@ -33,6 +34,12 @@ export class InitCommand implements yargs.CommandModule {
             })
             .option("docker", {
                 describe: "Set to true if docker-compose must be generated as well. False by default."
+            })
+            .option("pm", {
+                alias: "manager",
+                choices: ["npm", "yarn"],
+                default: "npm",
+                describe: "Install packages, expected values are npm or yarn."
             });
     }
 
@@ -43,6 +50,7 @@ export class InitCommand implements yargs.CommandModule {
             const isDocker = args.docker !== undefined ? true : false;
             const basePath = process.cwd() + (args.name ? ("/" + args.name) : "");
             const projectName = args.name ? path.basename(args.name as any) : undefined;
+            const installNpm = args.pm === "yarn" ? false : true;
             await CommandUtils.createFile(basePath + "/package.json", InitCommand.getPackageJsonTemplate(projectName), false);
             if (isDocker)
                 await CommandUtils.createFile(basePath + "/docker-compose.yml", InitCommand.getDockerComposeTemplate(database), false);
@@ -70,6 +78,12 @@ export class InitCommand implements yargs.CommandModule {
                 console.log(chalk.green(`Project created inside current directory.`));
             }
 
+            if (args.pm && installNpm) {
+                await InitCommand.executeCommand("npm install");
+            } else {
+                await InitCommand.executeCommand("yarn install");
+            }
+
         } catch (err) {
             console.log(chalk.black.bgRed("Error during project initialization:"));
             console.error(err);
@@ -81,11 +95,22 @@ export class InitCommand implements yargs.CommandModule {
     // Protected Static Methods
     // -------------------------------------------------------------------------
 
+    protected static executeCommand(command: string) {
+        return new Promise<string>((ok, fail) => {
+            exec(command, (error: any, stdout: any, stderr: any) => {
+                if (stdout) return ok(stdout);
+                if (stderr) return fail(stderr);
+                if (error) return fail(error);
+                ok("");
+            });
+        });
+    }
+
     /**
      * Gets contents of the ormconfig file.
      */
     protected static getOrmConfigTemplate(database: string): string {
-        const options: ObjectLiteral = { };
+        const options: ObjectLiteral = {};
         switch (database) {
             case "mysql":
                 Object.assign(options, {
diff --git a/src/commands/MigrationGenerateCommand.ts b/src/commands/MigrationGenerateCommand.ts
index f10d198497..a24343da81 100644
--- a/src/commands/MigrationGenerateCommand.ts
+++ b/src/commands/MigrationGenerateCommand.ts
@@ -50,6 +50,18 @@ export class MigrationGenerateCommand implements yargs.CommandModule {
                 type: "boolean",
                 default: false,
                 describe: "Generate a migration file on Javascript instead of Typescript",
+            })
+            .option("dr", {
+                alias: "dryrun",
+                type: "boolean",
+                default: false,
+                describe: "Prints out the contents of the migration instead of writing it to a file",
+            })
+            .option("ch", {
+                alias: "check",
+                type: "boolean",
+                default: false,
+                describe: "Verifies that the current database is up to date and that no migrations are needed. Otherwise exits with code 1.",
             });
     }
 
@@ -124,22 +136,36 @@ export class MigrationGenerateCommand implements yargs.CommandModule {
                 await connection.close();
             }
 
-            if (upSqls.length) {
-                if (args.name) {
-                    const fileContent = args.outputJs ?
-                        MigrationGenerateCommand.getJavascriptTemplate(args.name as any, timestamp, upSqls, downSqls.reverse()) :
-                        MigrationGenerateCommand.getTemplate(args.name as any, timestamp, upSqls, downSqls.reverse());
-                    const path = process.cwd() + "/" + (directory ? (directory + "/") : "") + filename;
-                    await CommandUtils.createFile(path, fileContent);
-
-                    console.log(chalk.green(`Migration ${chalk.blue(path)} has been generated successfully.`));
+            if (!upSqls.length) {
+                if (args.check) {
+                    console.log(chalk.green(`No changes in database schema were found`));
+                    process.exit(0);
                 } else {
-                    console.log(chalk.yellow("Please specify a migration name using the `-n` argument"));
+                    console.log(chalk.yellow(`No changes in database schema were found - cannot generate a migration. To create a new empty migration use "typeorm migration:create" command`));
+                    process.exit(1);
                 }
-            } else {
-                console.log(chalk.yellow(`No changes in database schema were found - cannot generate a migration. To create a new empty migration use "typeorm migration:create" command`));
+            } else if (!args.name) {
+                console.log(chalk.yellow("Please specify a migration name using the `-n` argument"));
                 process.exit(1);
             }
+
+            const fileContent = args.outputJs ?
+                MigrationGenerateCommand.getJavascriptTemplate(args.name as any, timestamp, upSqls, downSqls.reverse()) :
+                MigrationGenerateCommand.getTemplate(args.name as any, timestamp, upSqls, downSqls.reverse());
+            const path = process.cwd() + "/" + (directory ? (directory + "/") : "") + filename;
+
+            if (args.check) {
+                console.log(chalk.yellow(`Unexpected changes in database schema were found in check mode:\n\n${chalk.white(fileContent)}`));
+                process.exit(1);
+            }
+
+            if (args.dryrun) {
+                console.log(chalk.green(`Migration ${chalk.blue(path)} has content:\n\n${chalk.white(fileContent)}`));
+            } else {
+                await CommandUtils.createFile(path, fileContent);
+
+                console.log(chalk.green(`Migration ${chalk.blue(path)} has been generated successfully.`));
+            }
         } catch (err) {
             console.log(chalk.black.bgRed("Error during migration generation:"));
             console.error(err);
diff --git a/src/connection/options-reader/ConnectionOptionsYmlReader.ts b/src/connection/options-reader/ConnectionOptionsYmlReader.ts
index f43dd8867e..4b678037ef 100644
--- a/src/connection/options-reader/ConnectionOptionsYmlReader.ts
+++ b/src/connection/options-reader/ConnectionOptionsYmlReader.ts
@@ -18,7 +18,7 @@ export class ConnectionOptionsYmlReader {
         const contentsBuffer = PlatformTools.readFileSync(path);
         const contents = contentsBuffer.toString();
 
-        const config: undefined | string | {[key: string]: any} = ymlParser.safeLoad(contents);
+        const config: undefined | string | {[key: string]: any} = ymlParser.loadAll(contents);
 
         if (typeof config !== 'object') {
             return [];
diff --git a/src/driver/DriverUtils.ts b/src/driver/DriverUtils.ts
index 6e04bbcbfc..ddd1a23112 100644
--- a/src/driver/DriverUtils.ts
+++ b/src/driver/DriverUtils.ts
@@ -134,12 +134,26 @@ export class DriverUtils {
         let port = undefined;
         let hostReplicaSet = undefined;
         let replicaSet = undefined;
-        // remove mongodb query params
+        let optionsObject: any = {};
+
         if (afterBase && afterBase.indexOf("?") !== -1) {
-            // split params to get replica set
+
+            // split params
             afterQuestionMark = afterBase.substr((afterBase.indexOf("?") + 1), afterBase.length);
-            replicaSet = afterQuestionMark.split("=")[1];
 
+            const optionsList = afterQuestionMark.split("&");
+            let optionKey: string;
+            let optionValue: string;
+
+            // create optionsObject for merge with connectionUrl object before return
+            optionsList.forEach(optionItem => {
+                optionKey = optionItem.split("=")[0];
+                optionValue = optionItem.split("=")[1];
+                optionsObject[optionKey] = optionValue;
+            });
+
+            // specific replicaSet value to set options about hostReplicaSet
+            replicaSet = optionsObject["replicaSet"];
             afterBase = afterBase.substr(0, afterBase.indexOf("?"));
         }
 
@@ -155,21 +169,28 @@ export class DriverUtils {
             password = usernameAndPassword.substr(firstColon + 1);
         }
 
+        // If replicaSet have value set It as hostlist, If not set like standalone host
         if (replicaSet) {
             hostReplicaSet = hostAndPort;
         } else {
             [host, port] = hostAndPort.split(":");
         }
 
-        return {
+        let connectionUrl: any = {
             type: type,
             host: host,
             hostReplicaSet: hostReplicaSet,
             username: decodeURIComponent(username),
             password: decodeURIComponent(password),
             port: port ? parseInt(port) : undefined,
-            database: afterBase || undefined,
-            replicaSet: replicaSet || undefined
+            database: afterBase || undefined
         };
+
+        // Loop to set every options in connectionUrl to object
+        for (const [key, value] of Object.entries(optionsObject)) {
+            connectionUrl[key] = value;
+        }
+
+        return connectionUrl;
     }
 }
diff --git a/src/driver/aurora-data-api/AuroraDataApiDriver.ts b/src/driver/aurora-data-api/AuroraDataApiDriver.ts
index 0df90bdbd1..f3648bc20a 100644
--- a/src/driver/aurora-data-api/AuroraDataApiDriver.ts
+++ b/src/driver/aurora-data-api/AuroraDataApiDriver.ts
@@ -534,6 +534,10 @@ export class AuroraDataApiDriver implements Driver {
     normalizeDefault(columnMetadata: ColumnMetadata): string | undefined {
         const defaultValue = columnMetadata.default;
 
+        if (defaultValue === null) {
+            return undefined
+        }
+
         if ((columnMetadata.type === "enum" || columnMetadata.type === "simple-enum") && defaultValue !== undefined) {
             return `'${defaultValue}'`;
         }
diff --git a/src/driver/aurora-data-api/AuroraDataApiQueryRunner.ts b/src/driver/aurora-data-api/AuroraDataApiQueryRunner.ts
index 87099ddcb5..9de0819d3e 100644
--- a/src/driver/aurora-data-api/AuroraDataApiQueryRunner.ts
+++ b/src/driver/aurora-data-api/AuroraDataApiQueryRunner.ts
@@ -1333,7 +1333,7 @@ export class AuroraDataApiQueryRunner extends BaseQueryRunner implements QueryRu
 
                     if (tableColumn.type === "enum" || tableColumn.type === "simple-enum") {
                         const colType = dbColumn["COLUMN_TYPE"];
-                        const items = colType.substring(colType.indexOf("(") + 1, colType.indexOf(")")).split(",");
+                        const items = colType.substring(colType.indexOf("(") + 1, colType.lastIndexOf(")")).split(",");
                         tableColumn.enum = (items as string[]).map(item => {
                             return item.substring(1, item.length - 1);
                         });
diff --git a/src/driver/mysql/MysqlDriver.ts b/src/driver/mysql/MysqlDriver.ts
index 3e55d94fd6..0c97d049f7 100644
--- a/src/driver/mysql/MysqlDriver.ts
+++ b/src/driver/mysql/MysqlDriver.ts
@@ -582,15 +582,20 @@ export class MysqlDriver implements Driver {
     normalizeDefault(columnMetadata: ColumnMetadata): string | undefined {
         const defaultValue = columnMetadata.default;
 
-        if ((columnMetadata.type === "enum" || columnMetadata.type === "simple-enum") && defaultValue !== undefined) {
+        if (defaultValue === null) {
+            return undefined
+
+        } else if (
+            (columnMetadata.type === "enum"
+            || columnMetadata.type === "simple-enum"
+            || typeof defaultValue === "string")
+            && defaultValue !== undefined) {
             return `'${defaultValue}'`;
-        }
 
-        if ((columnMetadata.type === "set") && defaultValue !== undefined) {
+        } else if ((columnMetadata.type === "set") && defaultValue !== undefined) {
             return `'${DateUtils.simpleArrayToString(defaultValue)}'`;
-        }
 
-        if (typeof defaultValue === "number") {
+        } else if (typeof defaultValue === "number") {
             return `'${defaultValue.toFixed(columnMetadata.scale)}'`;
 
         } else if (typeof defaultValue === "boolean") {
@@ -599,12 +604,6 @@ export class MysqlDriver implements Driver {
         } else if (typeof defaultValue === "function") {
             return defaultValue();
 
-        } else if (typeof defaultValue === "string") {
-            return `'${defaultValue}'`;
-
-        } else if (defaultValue === null) {
-            return undefined;
-
         } else {
             return defaultValue;
         }
diff --git a/src/driver/mysql/MysqlQueryRunner.ts b/src/driver/mysql/MysqlQueryRunner.ts
index c4dce7894e..0ac8846f02 100644
--- a/src/driver/mysql/MysqlQueryRunner.ts
+++ b/src/driver/mysql/MysqlQueryRunner.ts
@@ -1529,7 +1529,7 @@ export class MysqlQueryRunner extends BaseQueryRunner implements QueryRunner {
 
                     if (tableColumn.type === "enum" || tableColumn.type === "simple-enum" || tableColumn.type === "set") {
                         const colType = dbColumn["COLUMN_TYPE"];
-                        const items = colType.substring(colType.indexOf("(") + 1, colType.indexOf(")")).split(",");
+                        const items = colType.substring(colType.indexOf("(") + 1, colType.lastIndexOf(")")).split(",");
                         tableColumn.enum = (items as string[]).map(item => {
                             return item.substring(1, item.length - 1);
                         });
@@ -1861,7 +1861,7 @@ export class MysqlQueryRunner extends BaseQueryRunner implements QueryRunner {
         const isMariaDb = this.driver.options.type === "mariadb";
         if (isMariaDb && column.asExpression && (column.generatedType || "VIRTUAL") === "VIRTUAL") {
             // do nothing - MariaDB does not support NULL/NOT NULL expressions for VIRTUAL columns
-        } else {   
+        } else {
             if (!column.isNullable)
                 c += " NOT NULL";
             if (column.isNullable)
diff --git a/src/driver/postgres/PostgresDriver.ts b/src/driver/postgres/PostgresDriver.ts
index 3b8475eecb..0400c18c01 100644
--- a/src/driver/postgres/PostgresDriver.ts
+++ b/src/driver/postgres/PostgresDriver.ts
@@ -306,7 +306,7 @@ export class PostgresDriver implements Driver {
 
         if (extensionsMetadata.hasExtensions) {
             await Promise.all([this.master, ...this.slaves].map(pool => {
-                return new Promise((ok, fail) => {
+                return new Promise<void>((ok, fail) => {
                     pool.connect(async (err: any, connection: any, release: Function) => {
                         await this.enableExtensions(extensionsMetadata, connection);
                         if (err) return fail(err);
@@ -586,21 +586,30 @@ export class PostgresDriver implements Driver {
 
         } else if (columnMetadata.type === "enum" || columnMetadata.type === "simple-enum" ) {
             if (columnMetadata.isArray) {
+                if (value === "{}") return [];
+
                 // manually convert enum array to array of values (pg does not support, see https://github.com/brianc/node-pg-types/issues/56)
-                value = value !== "{}" ? (value as string).substr(1, (value as string).length - 2).split(",") : [];
-                // convert to number if that exists in poosible enum options
+                value = (value as string).substr(1, (value as string).length - 2).split(",").map(val => {
+                    // replace double quotes from the beginning and from the end
+                    if (val.startsWith(`"`) && val.endsWith(`"`)) val = val.slice(1, -1);
+                    // replace double escaped backslash to single escaped e.g. \\\\ -> \\
+                    val = val.replace(/(\\\\)/g, "\\")
+                    // replace escaped double quotes to non-escaped e.g. \"asd\" -> "asd"
+                    return val.replace(/(\\")/g, '"')
+                });
+
+                // convert to number if that exists in possible enum options
                 value = value.map((val: string) => {
                     return !isNaN(+val) && columnMetadata.enum!.indexOf(parseInt(val)) >= 0 ? parseInt(val) : val;
                 });
             } else {
-                // convert to number if that exists in poosible enum options
+                // convert to number if that exists in possible enum options
                 value = !isNaN(+value) && columnMetadata.enum!.indexOf(parseInt(value)) >= 0 ? parseInt(value) : value;
             }
         }
 
         if (columnMetadata.transformer)
             value = ApplyValueTransformers.transformFrom(columnMetadata.transformer, value);
-
         return value;
     }
 
@@ -719,23 +728,22 @@ export class PostgresDriver implements Driver {
     /**
      * Normalizes "default" value of the column.
      */
-    normalizeDefault(columnMetadata: ColumnMetadata): string {
+    normalizeDefault(columnMetadata: ColumnMetadata): string | undefined {
         const defaultValue = columnMetadata.default;
-        const arrayCast = columnMetadata.isArray ? `::${columnMetadata.type}[]` : "";
 
-        if (
-            (
-                columnMetadata.type === "enum"
-                || columnMetadata.type === "simple-enum"
-            ) && defaultValue !== undefined
-        ) {
-            if (columnMetadata.isArray && Array.isArray(defaultValue)) {
-                return `'{${defaultValue.map((val: string) => `${val}`).join(",")}}'`;
-            }
-            return `'${defaultValue}'`;
-        }
+        if (defaultValue === null) {
+            return undefined;
 
-        if (typeof defaultValue === "number") {
+        } else if (columnMetadata.isArray && Array.isArray(defaultValue)) {
+            return `'{${defaultValue.map((val: string) => `${val}`).join(",")}}'`;
+
+        } else if (
+            (columnMetadata.type === "enum"
+            || columnMetadata.type === "simple-enum"
+            || typeof defaultValue === "number"
+            || typeof defaultValue === "string")
+            && defaultValue !== undefined
+        ) {
             return `'${defaultValue}'`;
 
         } else if (typeof defaultValue === "boolean") {
@@ -744,10 +752,7 @@ export class PostgresDriver implements Driver {
         } else if (typeof defaultValue === "function") {
             return defaultValue();
 
-        } else if (typeof defaultValue === "string") {
-            return `'${defaultValue}'${arrayCast}`;
-
-        } else if (typeof defaultValue === "object" && defaultValue !== null) {
+        } else if (typeof defaultValue === "object") {
             return `'${JSON.stringify(defaultValue)}'`;
 
         } else {
@@ -872,6 +877,7 @@ export class PostgresDriver implements Driver {
             const isColumnChanged = tableColumn.name !== columnMetadata.databaseName
                 || tableColumn.type !== this.normalizeType(columnMetadata)
                 || tableColumn.length !== columnMetadata.length
+                || tableColumn.isArray !== columnMetadata.isArray
                 || tableColumn.precision !== columnMetadata.precision
                 || (columnMetadata.scale !== undefined && tableColumn.scale !== columnMetadata.scale)
                 || tableColumn.comment !== columnMetadata.comment
@@ -879,6 +885,7 @@ export class PostgresDriver implements Driver {
                 || tableColumn.isPrimary !== columnMetadata.isPrimary
                 || tableColumn.isNullable !== columnMetadata.isNullable
                 || tableColumn.isUnique !== this.normalizeIsUnique(columnMetadata)
+                || tableColumn.enumName !== columnMetadata.enumName
                 || (tableColumn.enum && columnMetadata.enum && !OrmUtils.isArraysEqual(tableColumn.enum, columnMetadata.enum.map(val => val + ""))) // enums in postgres are always strings
                 || tableColumn.isGenerated !== columnMetadata.isGenerated
                 || (tableColumn.spatialFeatureType || "").toLowerCase() !== (columnMetadata.spatialFeatureType || "").toLowerCase()
@@ -890,9 +897,11 @@ export class PostgresDriver implements Driver {
             //     console.log("name:", tableColumn.name, columnMetadata.databaseName);
             //     console.log("type:", tableColumn.type, this.normalizeType(columnMetadata));
             //     console.log("length:", tableColumn.length, columnMetadata.length);
+            //     console.log("isArray:", tableColumn.isArray, columnMetadata.isArray);
             //     console.log("precision:", tableColumn.precision, columnMetadata.precision);
             //     console.log("scale:", tableColumn.scale, columnMetadata.scale);
             //     console.log("comment:", tableColumn.comment, columnMetadata.comment);
+            //     console.log("enumName:", tableColumn.enumName, columnMetadata.enumName);
             //     console.log("enum:", tableColumn.enum && columnMetadata.enum && !OrmUtils.isArraysEqual(tableColumn.enum, columnMetadata.enum.map(val => val + "")));
             //     console.log("onUpdate:", tableColumn.onUpdate, columnMetadata.onUpdate);
             //     console.log("isPrimary:", tableColumn.isPrimary, columnMetadata.isPrimary);
diff --git a/src/driver/postgres/PostgresQueryRunner.ts b/src/driver/postgres/PostgresQueryRunner.ts
index 97b71789c0..d640ea2846 100644
--- a/src/driver/postgres/PostgresQueryRunner.ts
+++ b/src/driver/postgres/PostgresQueryRunner.ts
@@ -349,17 +349,20 @@ export class PostgresQueryRunner extends BaseQueryRunner implements QueryRunner
         const downQueries: Query[] = [];
 
         // if table have column with ENUM type, we must create this type in postgres.
-        await Promise.all(table.columns
-            .filter(column => column.type === "enum" || column.type === "simple-enum")
-            .map(async column => {
-                const hasEnum = await this.hasEnumType(table, column);
-                // TODO: Should also check if values of existing type matches expected ones
-                if (!hasEnum) {
-                    upQueries.push(this.createEnumTypeSql(table, column));
-                    downQueries.push(this.dropEnumTypeSql(table, column));
-                }
-                return Promise.resolve();
-            }));
+        const enumColumns = table.columns.filter(column => column.type === "enum" || column.type === "simple-enum")
+        const createdEnumTypes: string[] = []
+        for (const column of enumColumns) {
+            // TODO: Should also check if values of existing type matches expected ones
+            const hasEnum = await this.hasEnumType(table, column);
+            const enumName = this.buildEnumName(table, column)
+
+            // if enum with the same "enumName" is defined more then once, me must prevent double creation
+            if (!hasEnum && createdEnumTypes.indexOf(enumName) === -1) {
+                createdEnumTypes.push(enumName)
+                upQueries.push(this.createEnumTypeSql(table, column, enumName));
+                downQueries.push(this.dropEnumTypeSql(table, column, enumName));
+            }
+        }
 
         upQueries.push(this.createTableSql(table, createForeignKeys));
         downQueries.push(this.dropTableSql(table));
@@ -629,6 +632,7 @@ export class PostgresQueryRunner extends BaseQueryRunner implements QueryRunner
         let clonedTable = table.clone();
         const upQueries: Query[] = [];
         const downQueries: Query[] = [];
+        let defaultValueChanged = false
 
         const oldColumn = oldTableColumnOrName instanceof TableColumn
             ? oldTableColumnOrName
@@ -636,7 +640,7 @@ export class PostgresQueryRunner extends BaseQueryRunner implements QueryRunner
         if (!oldColumn)
             throw new Error(`Column "${oldTableColumnOrName}" was not found in the "${table.name}" table.`);
 
-        if (oldColumn.type !== newColumn.type || oldColumn.length !== newColumn.length) {
+        if (oldColumn.type !== newColumn.type || oldColumn.length !== newColumn.length || newColumn.isArray !== oldColumn.isArray) {
             // To avoid data conversion, we just recreate column
             await this.dropColumn(table, oldColumn);
             await this.addColumn(table, newColumn);
@@ -753,45 +757,58 @@ export class PostgresQueryRunner extends BaseQueryRunner implements QueryRunner
             if (
                 (newColumn.type === "enum" || newColumn.type === "simple-enum")
                 && (oldColumn.type === "enum" || oldColumn.type === "simple-enum")
-                && !OrmUtils.isArraysEqual(newColumn.enum!, oldColumn.enum!)
+                && (!OrmUtils.isArraysEqual(newColumn.enum!, oldColumn.enum!) || newColumn.enumName !== oldColumn.enumName)
             ) {
-                const enumName = this.buildEnumName(table, newColumn);
                 const arraySuffix = newColumn.isArray ? "[]" : "";
-                const oldEnumName = this.buildEnumName(table, newColumn, true, false, true);
-                const oldEnumNameWithoutSchema = this.buildEnumName(table, newColumn, false, false, true);
-                const enumTypeBeforeColumnChange = await this.getEnumTypeName(table, oldColumn);
+
+                // "public"."new_enum"
+                const newEnumName = this.buildEnumName(table, newColumn);
+
+                // "public"."old_enum"
+                const oldEnumName = this.buildEnumName(table, oldColumn);
+
+                // "old_enum"
+                const oldEnumNameWithoutSchema = this.buildEnumName(table, oldColumn, false);
+
+                //"public"."old_enum_old"
+                const oldEnumNameWithSchema_old = this.buildEnumName(table, oldColumn, true, false, true);
+
+                //"old_enum_old"
+                const oldEnumNameWithoutSchema_old = this.buildEnumName(table, oldColumn, false, false, true);
 
                 // rename old ENUM
-                upQueries.push(new Query(`ALTER TYPE "${enumTypeBeforeColumnChange.enumTypeSchema}"."${enumTypeBeforeColumnChange.enumTypeName}" RENAME TO ${oldEnumNameWithoutSchema}`));
-                downQueries.push(new Query(`ALTER TYPE ${oldEnumName} RENAME TO  "${enumTypeBeforeColumnChange.enumTypeName}"`));
+                upQueries.push(new Query(`ALTER TYPE ${oldEnumName} RENAME TO ${oldEnumNameWithoutSchema_old}`));
+                downQueries.push(new Query(`ALTER TYPE ${oldEnumNameWithSchema_old} RENAME TO ${oldEnumNameWithoutSchema}`));
 
                 // create new ENUM
-                upQueries.push(this.createEnumTypeSql(table, newColumn));
-                downQueries.push(this.dropEnumTypeSql(table, oldColumn));
+                upQueries.push(this.createEnumTypeSql(table, newColumn, newEnumName));
+                downQueries.push(this.dropEnumTypeSql(table, newColumn, newEnumName));
 
                 // if column have default value, we must drop it to avoid issues with type casting
-                if (newColumn.default !== null && newColumn.default !== undefined) {
-                    upQueries.push(new Query(`ALTER TABLE ${this.escapePath(table)} ALTER COLUMN "${newColumn.name}" DROP DEFAULT`));
-                    downQueries.push(new Query(`ALTER TABLE ${this.escapePath(table)} ALTER COLUMN "${newColumn.name}" SET DEFAULT ${newColumn.default}`));
+                if (oldColumn.default !== null && oldColumn.default !== undefined) {
+                    // mark default as changed to prevent double update
+                    defaultValueChanged = true
+                    upQueries.push(new Query(`ALTER TABLE ${this.escapePath(table)} ALTER COLUMN "${oldColumn.name}" DROP DEFAULT`));
+                    downQueries.push(new Query(`ALTER TABLE ${this.escapePath(table)} ALTER COLUMN "${oldColumn.name}" SET DEFAULT ${oldColumn.default}`));
                 }
 
                 // build column types
-                const upType = `${enumName}${arraySuffix} USING "${newColumn.name}"::"text"::${enumName}${arraySuffix}`;
-                const downType = `${oldEnumName}${arraySuffix} USING "${newColumn.name}"::"text"::${oldEnumName}${arraySuffix}`;
+                const upType = `${newEnumName}${arraySuffix} USING "${newColumn.name}"::"text"::${newEnumName}${arraySuffix}`;
+                const downType = `${oldEnumNameWithSchema_old}${arraySuffix} USING "${newColumn.name}"::"text"::${oldEnumNameWithSchema_old}${arraySuffix}`;
 
                 // update column to use new type
                 upQueries.push(new Query(`ALTER TABLE ${this.escapePath(table)} ALTER COLUMN "${newColumn.name}" TYPE ${upType}`));
                 downQueries.push(new Query(`ALTER TABLE ${this.escapePath(table)} ALTER COLUMN "${newColumn.name}" TYPE ${downType}`));
 
-                // if column have default value and we dropped it before, we must bring it back
+                // restore column default or create new one
                 if (newColumn.default !== null && newColumn.default !== undefined) {
                     upQueries.push(new Query(`ALTER TABLE ${this.escapePath(table)} ALTER COLUMN "${newColumn.name}" SET DEFAULT ${newColumn.default}`));
                     downQueries.push(new Query(`ALTER TABLE ${this.escapePath(table)} ALTER COLUMN "${newColumn.name}" DROP DEFAULT`));
                 }
 
                 // remove old ENUM
-                upQueries.push(this.dropEnumTypeSql(table, newColumn, oldEnumName));
-                downQueries.push(this.createEnumTypeSql(table, oldColumn, oldEnumName));
+                upQueries.push(this.dropEnumTypeSql(table, oldColumn, oldEnumNameWithSchema_old));
+                downQueries.push(this.createEnumTypeSql(table, oldColumn, oldEnumNameWithSchema_old));
             }
 
             if (oldColumn.isNullable !== newColumn.isNullable) {
@@ -885,7 +902,8 @@ export class PostgresQueryRunner extends BaseQueryRunner implements QueryRunner
                 }
             }
 
-            if (newColumn.default !== oldColumn.default) {
+            // the default might have changed when the enum changed
+            if (newColumn.default !== oldColumn.default && !defaultValueChanged) {
                 if (newColumn.default !== null && newColumn.default !== undefined) {
                     upQueries.push(new Query(`ALTER TABLE ${this.escapePath(table)} ALTER COLUMN "${newColumn.name}" SET DEFAULT ${newColumn.default}`));
 
@@ -1567,11 +1585,17 @@ export class PostgresQueryRunner extends BaseQueryRunner implements QueryRunner
                     }
 
                     if (tableColumn.type.indexOf("enum") !== -1) {
+                        // check if `enumName` is specified by user
+                        const { enumTypeName } = await this.getEnumTypeName(table, tableColumn)
+                        const builtEnumName = this.buildEnumName(table, tableColumn, false, true)
+                        if (builtEnumName !== enumTypeName)
+                            tableColumn.enumName = enumTypeName
+
                         tableColumn.type = "enum";
                         const sql = `SELECT "e"."enumlabel" AS "value" FROM "pg_enum" "e" ` +
                         `INNER JOIN "pg_type" "t" ON "t"."oid" = "e"."enumtypid" ` +
                         `INNER JOIN "pg_namespace" "n" ON "n"."oid" = "t"."typnamespace" ` +
-                        `WHERE "n"."nspname" = '${dbTable["table_schema"]}' AND "t"."typname" = '${this.buildEnumName(table, tableColumn.name, false, true)}'`;
+                        `WHERE "n"."nspname" = '${dbTable["table_schema"]}' AND "t"."typname" = '${this.buildEnumName(table, tableColumn, false, true)}'`;
                         const results: ObjectLiteral[] = await this.query(sql);
                         tableColumn.enum = results.map(result => result["value"]);
                     }
@@ -1938,8 +1962,7 @@ export class PostgresQueryRunner extends BaseQueryRunner implements QueryRunner
      * Builds create ENUM type sql.
      */
     protected createEnumTypeSql(table: Table, column: TableColumn, enumName?: string): Query {
-        if (!enumName)
-            enumName = this.buildEnumName(table, column);
+        if (!enumName) enumName = this.buildEnumName(table, column);
         const enumValues = column.enum!.map(value => `'${value.replace("'", "''")}'`).join(", ");
         return new Query(`CREATE TYPE ${enumName} AS ENUM(${enumValues})`);
     }
@@ -1948,8 +1971,7 @@ export class PostgresQueryRunner extends BaseQueryRunner implements QueryRunner
      * Builds create ENUM type sql.
      */
     protected dropEnumTypeSql(table: Table, column: TableColumn, enumName?: string): Query {
-        if (!enumName)
-            enumName = this.buildEnumName(table, column);
+        if (!enumName) enumName = this.buildEnumName(table, column);
         return new Query(`DROP TYPE ${enumName}`);
     }
 
@@ -2089,20 +2111,12 @@ export class PostgresQueryRunner extends BaseQueryRunner implements QueryRunner
     /**
      * Builds ENUM type name from given table and column.
      */
-    protected buildEnumName(table: Table, columnOrName: TableColumn|string, withSchema: boolean = true, disableEscape?: boolean, toOld?: boolean): string {
-        /**
-         * If enumName is specified in column options then use it instead
-         */
-        if (columnOrName instanceof TableColumn && columnOrName.enumName) {
-            let enumName = columnOrName.enumName;
-            if (toOld)
-                enumName = enumName + "_old";
-            return disableEscape ? enumName : `"${enumName}"`;
-        }
-        const columnName = columnOrName instanceof TableColumn ? columnOrName.name : columnOrName;
+    protected buildEnumName(table: Table, column: TableColumn, withSchema: boolean = true, disableEscape?: boolean, toOld?: boolean): string {
         const schema = table.name.indexOf(".") === -1 ? this.driver.options.schema : table.name.split(".")[0];
         const tableName = table.name.indexOf(".") === -1 ? table.name : table.name.split(".")[1];
-        let enumName = schema && withSchema ? `${schema}.${tableName}_${columnName.toLowerCase()}_enum` : `${tableName}_${columnName.toLowerCase()}_enum`;
+        let enumName = column.enumName ? column.enumName : `${tableName}_${column.name.toLowerCase()}_enum`;
+        if (schema && withSchema)
+            enumName = `${schema}.${enumName}`
         if (toOld)
             enumName = enumName + "_old";
         return enumName.split(".").map(i => {
@@ -2120,9 +2134,19 @@ export class PostgresQueryRunner extends BaseQueryRunner implements QueryRunner
         }
         const result = await this.query(`SELECT "udt_schema", "udt_name" ` +
             `FROM "information_schema"."columns" WHERE "table_schema" = '${schema}' AND "table_name" = '${name}' AND "column_name"='${column.name}'`);
+
+        // docs: https://www.postgresql.org/docs/current/xtypes.html
+        // When you define a new base type, PostgreSQL automatically provides support for arrays of that type.
+        // The array type typically has the same name as the base type with the underscore character (_) prepended.
+        // ----
+        // so, we must remove this underscore character from enum type name
+        let udtName = result[0]["udt_name"]
+        if (udtName.indexOf("_") === 0) {
+            udtName = udtName.substr(1, udtName.length)
+        }
         return {
             enumTypeSchema: result[0]["udt_schema"],
-            enumTypeName: result[0]["udt_name"]
+            enumTypeName: udtName
         };
     }
 
diff --git a/src/driver/sqlite-abstract/AbstractSqliteDriver.ts b/src/driver/sqlite-abstract/AbstractSqliteDriver.ts
index f76dd030fb..ca66771739 100644
--- a/src/driver/sqlite-abstract/AbstractSqliteDriver.ts
+++ b/src/driver/sqlite-abstract/AbstractSqliteDriver.ts
@@ -565,7 +565,7 @@ export abstract class AbstractSqliteDriver implements Driver {
             // console.log("precision:", tableColumn.precision, columnMetadata.precision);
             // console.log("scale:", tableColumn.scale, columnMetadata.scale);
             // console.log("comment:", tableColumn.comment, columnMetadata.comment);
-            // console.log("default:", tableColumn.default, columnMetadata.default);
+            // console.log("default:", this.normalizeDefault(columnMetadata), columnMetadata.default);
             // console.log("isPrimary:", tableColumn.isPrimary, columnMetadata.isPrimary);
             // console.log("isNullable:", tableColumn.isNullable, columnMetadata.isNullable);
             // console.log("isUnique:", tableColumn.isUnique, this.normalizeIsUnique(columnMetadata));
diff --git a/src/driver/sqlite-abstract/AbstractSqliteQueryRunner.ts b/src/driver/sqlite-abstract/AbstractSqliteQueryRunner.ts
index ce9eb95796..23260532dc 100644
--- a/src/driver/sqlite-abstract/AbstractSqliteQueryRunner.ts
+++ b/src/driver/sqlite-abstract/AbstractSqliteQueryRunner.ts
@@ -846,7 +846,6 @@ export abstract class AbstractSqliteQueryRunner extends BaseQueryRunner implemen
                     const enumMatch = sql.match(new RegExp("\"(" + tableColumn.name + ")\" varchar CHECK\\s*\\(\\s*\\1\\s+IN\\s*\\(('[^']+'(?:\\s*,\\s*'[^']+')+)\\s*\\)\\s*\\)"));
                     if (enumMatch) {
                         // This is an enum
-                        tableColumn.type = "simple-enum";
                         tableColumn.enum = enumMatch[2].substr(1, enumMatch[2].length - 2).split("','");
                     }
                 }
diff --git a/src/driver/sqlserver/SqlServerDriver.ts b/src/driver/sqlserver/SqlServerDriver.ts
index a36ee5b4e1..e4ea1b3982 100644
--- a/src/driver/sqlserver/SqlServerDriver.ts
+++ b/src/driver/sqlserver/SqlServerDriver.ts
@@ -602,20 +602,38 @@ export class SqlServerDriver implements Driver {
             if (!tableColumn)
                 return false; // we don't need new columns, we only need exist and changed
 
-            return  tableColumn.name !== columnMetadata.databaseName
+            const isColumnChanged = tableColumn.name !== columnMetadata.databaseName
                 || tableColumn.type !== this.normalizeType(columnMetadata)
                 || tableColumn.length !== columnMetadata.length
                 || tableColumn.precision !== columnMetadata.precision
                 || tableColumn.scale !== columnMetadata.scale
                 // || tableColumn.comment !== columnMetadata.comment || // todo
-                || (!tableColumn.isGenerated && this.lowerDefaultValueIfNessesary(this.normalizeDefault(columnMetadata)) !== this.lowerDefaultValueIfNessesary(tableColumn.default)) // we included check for generated here, because generated columns already can have default values
+                || tableColumn.isGenerated !== columnMetadata.isGenerated
+                || (!tableColumn.isGenerated && this.lowerDefaultValueIfNecessary(this.normalizeDefault(columnMetadata)) !== this.lowerDefaultValueIfNecessary(tableColumn.default)) // we included check for generated here, because generated columns already can have default values
                 || tableColumn.isPrimary !== columnMetadata.isPrimary
                 || tableColumn.isNullable !== columnMetadata.isNullable
-                || tableColumn.isUnique !== this.normalizeIsUnique(columnMetadata)
-                || tableColumn.isGenerated !== columnMetadata.isGenerated;
+                || tableColumn.isUnique !== this.normalizeIsUnique(columnMetadata);
+
+            // DEBUG SECTION
+            // if (isColumnChanged) {
+            //     console.log("table:", columnMetadata.entityMetadata.tableName);
+            //     console.log("name:", tableColumn.name, columnMetadata.databaseName);
+            //     console.log("type:", tableColumn.type, this.normalizeType(columnMetadata));
+            //     console.log("length:", tableColumn.length, columnMetadata.length);
+            //     console.log("precision:", tableColumn.precision, columnMetadata.precision);
+            //     console.log("scale:", tableColumn.scale, columnMetadata.scale);
+            //     console.log("isGenerated:", tableColumn.isGenerated, columnMetadata.isGenerated);
+            //     console.log("isGenerated 2:", !tableColumn.isGenerated && this.lowerDefaultValueIfNecessary(this.normalizeDefault(columnMetadata)) !== this.lowerDefaultValueIfNecessary(tableColumn.default));
+            //     console.log("isPrimary:", tableColumn.isPrimary, columnMetadata.isPrimary);
+            //     console.log("isNullable:", tableColumn.isNullable, columnMetadata.isNullable);
+            //     console.log("isUnique:", tableColumn.isUnique, this.normalizeIsUnique(columnMetadata));
+            //     console.log("==========================================");
+            // }
+
+            return isColumnChanged
         });
     }
-    private lowerDefaultValueIfNessesary(value: string | undefined) {
+    private lowerDefaultValueIfNecessary(value: string | undefined) {
         // SqlServer saves function calls in default value as lowercase https://github.com/typeorm/typeorm/issues/2733
         if (!value) {
             return value;
diff --git a/src/driver/sqlserver/SqlServerQueryRunner.ts b/src/driver/sqlserver/SqlServerQueryRunner.ts
index 2e6a7d11aa..e5a70093c1 100644
--- a/src/driver/sqlserver/SqlServerQueryRunner.ts
+++ b/src/driver/sqlserver/SqlServerQueryRunner.ts
@@ -1710,11 +1710,10 @@ export class SqlServerQueryRunner extends BaseQueryRunner implements QueryRunner
                         // Check if this is an enum
                         const columnCheckConstraints = columnConstraints.filter(constraint => constraint["CONSTRAINT_TYPE"] === "CHECK");
                         if (columnCheckConstraints.length) {
-                            const isEnumRegexp = new RegExp("^\\(\\[" + tableColumn.name + "\\]='[^']+'(?: OR \\[" + tableColumn.name + "\\]='[^']+')*\\)$");
+                            // const isEnumRegexp = new RegExp("^\\(\\[" + tableColumn.name + "\\]='[^']+'(?: OR \\[" + tableColumn.name + "\\]='[^']+')*\\)$");
                             for (const checkConstraint of columnCheckConstraints) {
-                                if (isEnumRegexp.test(checkConstraint["definition"])) {
+                                if (this.isEnumCheckConstraint(checkConstraint["CONSTRAINT_NAME"])) {
                                     // This is an enum constraint, make column into an enum
-                                    tableColumn.type = "simple-enum";
                                     tableColumn.enum = [];
                                     const enumValueRegexp = new RegExp("\\[" + tableColumn.name + "\\]='([^']+)'", "g");
                                     let result;
@@ -1775,13 +1774,15 @@ export class SqlServerQueryRunner extends BaseQueryRunner implements QueryRunner
                     && dbConstraint["CONSTRAINT_TYPE"] === "CHECK";
             }), dbConstraint => dbConstraint["CONSTRAINT_NAME"]);
 
-            table.checks = tableCheckConstraints.map(constraint => {
-                const checks = dbConstraints.filter(dbC => dbC["CONSTRAINT_NAME"] === constraint["CONSTRAINT_NAME"]);
-                return new TableCheck({
-                    name: constraint["CONSTRAINT_NAME"],
-                    columnNames: checks.map(c => c["COLUMN_NAME"]),
-                    expression: constraint["definition"]
-                });
+            table.checks = tableCheckConstraints
+                .filter(constraint => !this.isEnumCheckConstraint(constraint["CONSTRAINT_NAME"]))
+                .map(constraint => {
+                    const checks = dbConstraints.filter(dbC => dbC["CONSTRAINT_NAME"] === constraint["CONSTRAINT_NAME"]);
+                    return new TableCheck({
+                        name: constraint["CONSTRAINT_NAME"],
+                        columnNames: checks.map(c => c["COLUMN_NAME"]),
+                        expression: constraint["definition"]
+                    });
             });
 
             // find foreign key constraints of table, group them by constraint name and build TableForeignKey.
@@ -2125,8 +2126,11 @@ export class SqlServerQueryRunner extends BaseQueryRunner implements QueryRunner
     protected buildCreateColumnSql(table: Table, column: TableColumn, skipIdentity: boolean, createDefault: boolean) {
         let c = `"${column.name}" ${this.connection.driver.createFullType(column)}`;
 
-        if (column.enum)
-            c += " CHECK( " + column.name + " IN (" + column.enum.map(val => "'" + val + "'").join(",") + ") )";
+        if (column.enum) {
+            const expression = column.name + " IN (" + column.enum.map(val => "'" + val + "'").join(",") + ")";
+            const checkName = this.connection.namingStrategy.checkConstraintName(table, expression, true)
+            c += ` CONSTRAINT ${checkName} CHECK(${expression})`;
+        }
 
         if (column.collation)
             c += " COLLATE " + column.collation;
@@ -2151,6 +2155,10 @@ export class SqlServerQueryRunner extends BaseQueryRunner implements QueryRunner
         return c;
     }
 
+    protected isEnumCheckConstraint(name: string): boolean {
+        return name.indexOf("CHK_") !== -1 && name.indexOf("_ENUM") !== -1
+    }
+
     /**
      * Converts MssqlParameter into real mssql parameter type.
      */
diff --git a/src/entity-manager/EntityManager.ts b/src/entity-manager/EntityManager.ts
index cc5616b48a..18216930b6 100644
--- a/src/entity-manager/EntityManager.ts
+++ b/src/entity-manager/EntityManager.ts
@@ -291,13 +291,25 @@ export class EntityManager {
      * Saves all given entities in the database.
      * If entities do not exist in the database then inserts, otherwise updates.
      */
-    save<Entity, T extends DeepPartial<Entity>>(targetOrEntity: EntityTarget<Entity>, entities: T[], options?: SaveOptions): Promise<T[]>;
+    save<Entity, T extends DeepPartial<Entity>>(targetOrEntity: EntityTarget<Entity>, entities: T[], options: SaveOptions & { reload: false }): Promise<T[]>;
 
     /**
      * Saves all given entities in the database.
      * If entities do not exist in the database then inserts, otherwise updates.
      */
-    save<Entity, T extends DeepPartial<Entity>>(targetOrEntity: EntityTarget<Entity>, entity: T, options?: SaveOptions): Promise<T>;
+    save<Entity, T extends DeepPartial<Entity>>(targetOrEntity: EntityTarget<Entity>, entities: T[], options?: SaveOptions): Promise<(T & Entity)[]>;
+
+    /**
+     * Saves a given entity in the database.
+     * If entity does not exist in the database then inserts, otherwise updates.
+     */
+    save<Entity, T extends DeepPartial<Entity>>(targetOrEntity: EntityTarget<Entity>, entity: T, options: SaveOptions & { reload: false }): Promise<T>;
+
+    /**
+     * Saves a given entity in the database.
+     * If entity does not exist in the database then inserts, otherwise updates.
+     */
+    save<Entity, T extends DeepPartial<Entity>>(targetOrEntity: EntityTarget<Entity>, entity: T, options?: SaveOptions): Promise<T & Entity>;
 
     /**
      * Saves a given entity in the database.
diff --git a/src/entity-manager/MongoEntityManager.ts b/src/entity-manager/MongoEntityManager.ts
index fec1d5a2e7..a23be20b33 100644
--- a/src/entity-manager/MongoEntityManager.ts
+++ b/src/entity-manager/MongoEntityManager.ts
@@ -62,6 +62,10 @@ import { BroadcasterResult } from "../subscriber/BroadcasterResult";
  */
 export class MongoEntityManager extends EntityManager {
 
+    get mongoQueryRunner(): MongoQueryRunner {
+        return (this.connection.driver as MongoDriver).queryRunner as MongoQueryRunner;
+    }
+
     // -------------------------------------------------------------------------
     // Constructor
     // -------------------------------------------------------------------------
@@ -70,17 +74,6 @@ export class MongoEntityManager extends EntityManager {
         super(connection);
     }
 
-    // -------------------------------------------------------------------------
-    // Overridden Properties
-    // -------------------------------------------------------------------------
-
-    /**
-     * Gets query runner used to execute queries.
-     */
-    get queryRunner(): MongoQueryRunner {
-        return (this.connection.driver as MongoDriver).queryRunner!;
-    }
-
     // -------------------------------------------------------------------------
     // Overridden Methods
     // -------------------------------------------------------------------------
@@ -262,7 +255,7 @@ export class MongoEntityManager extends EntityManager {
      */
     createCursor<Entity, T = any>(entityClassOrName: EntityTarget<Entity>, query?: ObjectLiteral): Cursor<T> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.cursor(metadata.tableName, query);
+        return this.mongoQueryRunner.cursor(metadata.tableName, query);
     }
 
     /**
@@ -281,7 +274,7 @@ export class MongoEntityManager extends EntityManager {
      */
     aggregate<Entity, R = any>(entityClassOrName: EntityTarget<Entity>, pipeline: ObjectLiteral[], options?: CollectionAggregationOptions): AggregationCursor<R> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.aggregate(metadata.tableName, pipeline, options);
+        return this.mongoQueryRunner.aggregate(metadata.tableName, pipeline, options);
     }
 
     /**
@@ -290,7 +283,7 @@ export class MongoEntityManager extends EntityManager {
      */
     aggregateEntity<Entity>(entityClassOrName: EntityTarget<Entity>, pipeline: ObjectLiteral[], options?: CollectionAggregationOptions): AggregationCursor<Entity> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        const cursor = this.queryRunner.aggregate(metadata.tableName, pipeline, options);
+        const cursor = this.mongoQueryRunner.aggregate(metadata.tableName, pipeline, options);
         this.applyEntityTransformationToCursor(metadata, cursor);
         return cursor;
     }
@@ -300,7 +293,7 @@ export class MongoEntityManager extends EntityManager {
      */
     bulkWrite<Entity>(entityClassOrName: EntityTarget<Entity>, operations: ObjectLiteral[], options?: CollectionBulkWriteOptions): Promise<BulkWriteOpResultObject> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.bulkWrite(metadata.tableName, operations, options);
+        return this.mongoQueryRunner.bulkWrite(metadata.tableName, operations, options);
     }
 
     /**
@@ -308,7 +301,7 @@ export class MongoEntityManager extends EntityManager {
      */
     count<Entity>(entityClassOrName: EntityTarget<Entity>, query?: ObjectLiteral, options?: MongoCountPreferences): Promise<number> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.count(metadata.tableName, query, options);
+        return this.mongoQueryRunner.count(metadata.tableName, query, options);
     }
 
     /**
@@ -316,7 +309,7 @@ export class MongoEntityManager extends EntityManager {
      */
     createCollectionIndex<Entity>(entityClassOrName: EntityTarget<Entity>, fieldOrSpec: string | any, options?: MongodbIndexOptions): Promise<string> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.createCollectionIndex(metadata.tableName, fieldOrSpec, options);
+        return this.mongoQueryRunner.createCollectionIndex(metadata.tableName, fieldOrSpec, options);
     }
 
     /**
@@ -326,7 +319,7 @@ export class MongoEntityManager extends EntityManager {
      */
     createCollectionIndexes<Entity>(entityClassOrName: EntityTarget<Entity>, indexSpecs: ObjectLiteral[]): Promise<void> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.createCollectionIndexes(metadata.tableName, indexSpecs);
+        return this.mongoQueryRunner.createCollectionIndexes(metadata.tableName, indexSpecs);
     }
 
     /**
@@ -334,7 +327,7 @@ export class MongoEntityManager extends EntityManager {
      */
     deleteMany<Entity>(entityClassOrName: EntityTarget<Entity>, query: ObjectLiteral, options?: CollectionOptions): Promise<DeleteWriteOpResultObject> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.deleteMany(metadata.tableName, query, options);
+        return this.mongoQueryRunner.deleteMany(metadata.tableName, query, options);
     }
 
     /**
@@ -342,7 +335,7 @@ export class MongoEntityManager extends EntityManager {
      */
     deleteOne<Entity>(entityClassOrName: EntityTarget<Entity>, query: ObjectLiteral, options?: CollectionOptions): Promise<DeleteWriteOpResultObject> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.deleteOne(metadata.tableName, query, options);
+        return this.mongoQueryRunner.deleteOne(metadata.tableName, query, options);
     }
 
     /**
@@ -350,7 +343,7 @@ export class MongoEntityManager extends EntityManager {
      */
     distinct<Entity>(entityClassOrName: EntityTarget<Entity>, key: string, query: ObjectLiteral, options?: { readPreference?: ReadPreference | string }): Promise<any> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.distinct(metadata.tableName, key, query, options);
+        return this.mongoQueryRunner.distinct(metadata.tableName, key, query, options);
     }
 
     /**
@@ -358,7 +351,7 @@ export class MongoEntityManager extends EntityManager {
      */
     dropCollectionIndex<Entity>(entityClassOrName: EntityTarget<Entity>, indexName: string, options?: CollectionOptions): Promise<any> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.dropCollectionIndex(metadata.tableName, indexName, options);
+        return this.mongoQueryRunner.dropCollectionIndex(metadata.tableName, indexName, options);
     }
 
     /**
@@ -366,7 +359,7 @@ export class MongoEntityManager extends EntityManager {
      */
     dropCollectionIndexes<Entity>(entityClassOrName: EntityTarget<Entity>): Promise<any> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.dropCollectionIndexes(metadata.tableName);
+        return this.mongoQueryRunner.dropCollectionIndexes(metadata.tableName);
     }
 
     /**
@@ -374,7 +367,7 @@ export class MongoEntityManager extends EntityManager {
      */
     findOneAndDelete<Entity>(entityClassOrName: EntityTarget<Entity>, query: ObjectLiteral, options?: { projection?: Object, sort?: Object, maxTimeMS?: number }): Promise<FindAndModifyWriteOpResultObject> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.findOneAndDelete(metadata.tableName, query, options);
+        return this.mongoQueryRunner.findOneAndDelete(metadata.tableName, query, options);
     }
 
     /**
@@ -382,7 +375,7 @@ export class MongoEntityManager extends EntityManager {
      */
     findOneAndReplace<Entity>(entityClassOrName: EntityTarget<Entity>, query: ObjectLiteral, replacement: Object, options?: FindOneAndReplaceOption): Promise<FindAndModifyWriteOpResultObject> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.findOneAndReplace(metadata.tableName, query, replacement, options);
+        return this.mongoQueryRunner.findOneAndReplace(metadata.tableName, query, replacement, options);
     }
 
     /**
@@ -390,7 +383,7 @@ export class MongoEntityManager extends EntityManager {
      */
     findOneAndUpdate<Entity>(entityClassOrName: EntityTarget<Entity>, query: ObjectLiteral, update: Object, options?: FindOneAndReplaceOption): Promise<FindAndModifyWriteOpResultObject> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.findOneAndUpdate(metadata.tableName, query, update, options);
+        return this.mongoQueryRunner.findOneAndUpdate(metadata.tableName, query, update, options);
     }
 
     /**
@@ -398,7 +391,7 @@ export class MongoEntityManager extends EntityManager {
      */
     geoHaystackSearch<Entity>(entityClassOrName: EntityTarget<Entity>, x: number, y: number, options?: GeoHaystackSearchOptions): Promise<any> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.geoHaystackSearch(metadata.tableName, x, y, options);
+        return this.mongoQueryRunner.geoHaystackSearch(metadata.tableName, x, y, options);
     }
 
     /**
@@ -406,7 +399,7 @@ export class MongoEntityManager extends EntityManager {
      */
     geoNear<Entity>(entityClassOrName: EntityTarget<Entity>, x: number, y: number, options?: GeoNearOptions): Promise<any> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.geoNear(metadata.tableName, x, y, options);
+        return this.mongoQueryRunner.geoNear(metadata.tableName, x, y, options);
     }
 
     /**
@@ -414,7 +407,7 @@ export class MongoEntityManager extends EntityManager {
      */
     group<Entity>(entityClassOrName: EntityTarget<Entity>, keys: Object | Array<any> | Function | Code, condition: Object, initial: Object, reduce: Function | Code, finalize: Function | Code, command: boolean, options?: { readPreference?: ReadPreference | string }): Promise<any> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.group(metadata.tableName, keys, condition, initial, reduce, finalize, command, options);
+        return this.mongoQueryRunner.group(metadata.tableName, keys, condition, initial, reduce, finalize, command, options);
     }
 
     /**
@@ -422,7 +415,7 @@ export class MongoEntityManager extends EntityManager {
      */
     collectionIndexes<Entity>(entityClassOrName: EntityTarget<Entity>): Promise<any> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.collectionIndexes(metadata.tableName);
+        return this.mongoQueryRunner.collectionIndexes(metadata.tableName);
     }
 
     /**
@@ -430,7 +423,7 @@ export class MongoEntityManager extends EntityManager {
      */
     collectionIndexExists<Entity>(entityClassOrName: EntityTarget<Entity>, indexes: string | string[]): Promise<boolean> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.collectionIndexExists(metadata.tableName, indexes);
+        return this.mongoQueryRunner.collectionIndexExists(metadata.tableName, indexes);
     }
 
     /**
@@ -438,7 +431,7 @@ export class MongoEntityManager extends EntityManager {
      */
     collectionIndexInformation<Entity>(entityClassOrName: EntityTarget<Entity>, options?: { full: boolean }): Promise<any> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.collectionIndexInformation(metadata.tableName, options);
+        return this.mongoQueryRunner.collectionIndexInformation(metadata.tableName, options);
     }
 
     /**
@@ -446,7 +439,7 @@ export class MongoEntityManager extends EntityManager {
      */
     initializeOrderedBulkOp<Entity>(entityClassOrName: EntityTarget<Entity>, options?: CollectionOptions): OrderedBulkOperation {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.initializeOrderedBulkOp(metadata.tableName, options);
+        return this.mongoQueryRunner.initializeOrderedBulkOp(metadata.tableName, options);
     }
 
     /**
@@ -454,7 +447,7 @@ export class MongoEntityManager extends EntityManager {
      */
     initializeUnorderedBulkOp<Entity>(entityClassOrName: EntityTarget<Entity>, options?: CollectionOptions): UnorderedBulkOperation {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.initializeUnorderedBulkOp(metadata.tableName, options);
+        return this.mongoQueryRunner.initializeUnorderedBulkOp(metadata.tableName, options);
     }
 
     /**
@@ -462,7 +455,7 @@ export class MongoEntityManager extends EntityManager {
      */
     insertMany<Entity>(entityClassOrName: EntityTarget<Entity>, docs: ObjectLiteral[], options?: CollectionInsertManyOptions): Promise<InsertWriteOpResult> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.insertMany(metadata.tableName, docs, options);
+        return this.mongoQueryRunner.insertMany(metadata.tableName, docs, options);
     }
 
     /**
@@ -470,7 +463,7 @@ export class MongoEntityManager extends EntityManager {
      */
     insertOne<Entity>(entityClassOrName: EntityTarget<Entity>, doc: ObjectLiteral, options?: CollectionInsertOneOptions): Promise<InsertOneWriteOpResult> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.insertOne(metadata.tableName, doc, options);
+        return this.mongoQueryRunner.insertOne(metadata.tableName, doc, options);
     }
 
     /**
@@ -478,7 +471,7 @@ export class MongoEntityManager extends EntityManager {
      */
     isCapped<Entity>(entityClassOrName: EntityTarget<Entity>): Promise<any> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.isCapped(metadata.tableName);
+        return this.mongoQueryRunner.isCapped(metadata.tableName);
     }
 
     /**
@@ -486,7 +479,7 @@ export class MongoEntityManager extends EntityManager {
      */
     listCollectionIndexes<Entity>(entityClassOrName: EntityTarget<Entity>, options?: { batchSize?: number, readPreference?: ReadPreference | string }): CommandCursor {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.listCollectionIndexes(metadata.tableName, options);
+        return this.mongoQueryRunner.listCollectionIndexes(metadata.tableName, options);
     }
 
     /**
@@ -494,7 +487,7 @@ export class MongoEntityManager extends EntityManager {
      */
     mapReduce<Entity>(entityClassOrName: EntityTarget<Entity>, map: Function | string, reduce: Function | string, options?: MapReduceOptions): Promise<any> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.mapReduce(metadata.tableName, map, reduce, options);
+        return this.mongoQueryRunner.mapReduce(metadata.tableName, map, reduce, options);
     }
 
     /**
@@ -503,7 +496,7 @@ export class MongoEntityManager extends EntityManager {
      */
     parallelCollectionScan<Entity>(entityClassOrName: EntityTarget<Entity>, options?: ParallelCollectionScanOptions): Promise<Cursor<Entity>[]> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.parallelCollectionScan(metadata.tableName, options);
+        return this.mongoQueryRunner.parallelCollectionScan(metadata.tableName, options);
     }
 
     /**
@@ -511,7 +504,7 @@ export class MongoEntityManager extends EntityManager {
      */
     reIndex<Entity>(entityClassOrName: EntityTarget<Entity>): Promise<any> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.reIndex(metadata.tableName);
+        return this.mongoQueryRunner.reIndex(metadata.tableName);
     }
 
     /**
@@ -519,7 +512,7 @@ export class MongoEntityManager extends EntityManager {
      */
     rename<Entity>(entityClassOrName: EntityTarget<Entity>, newName: string, options?: { dropTarget?: boolean }): Promise<Collection<any>> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.rename(metadata.tableName, newName, options);
+        return this.mongoQueryRunner.rename(metadata.tableName, newName, options);
     }
 
     /**
@@ -527,7 +520,7 @@ export class MongoEntityManager extends EntityManager {
      */
     replaceOne<Entity>(entityClassOrName: EntityTarget<Entity>, query: ObjectLiteral, doc: ObjectLiteral, options?: ReplaceOneOptions): Promise<UpdateWriteOpResult> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.replaceOne(metadata.tableName, query, doc, options);
+        return this.mongoQueryRunner.replaceOne(metadata.tableName, query, doc, options);
     }
 
     /**
@@ -535,12 +528,12 @@ export class MongoEntityManager extends EntityManager {
      */
     stats<Entity>(entityClassOrName: EntityTarget<Entity>, options?: { scale: number }): Promise<CollStats> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.stats(metadata.tableName, options);
+        return this.mongoQueryRunner.stats(metadata.tableName, options);
     }
 
     watch<Entity>(entityClassOrName: EntityTarget<Entity>, pipeline?: Object[], options?: ChangeStreamOptions): ChangeStream {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.watch(metadata.tableName, pipeline, options);
+        return this.mongoQueryRunner.watch(metadata.tableName, pipeline, options);
     }
 
     /**
@@ -548,7 +541,7 @@ export class MongoEntityManager extends EntityManager {
      */
     updateMany<Entity>(entityClassOrName: EntityTarget<Entity>, query: ObjectLiteral, update: ObjectLiteral, options?: { upsert?: boolean, w?: any, wtimeout?: number, j?: boolean }): Promise<UpdateWriteOpResult> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.updateMany(metadata.tableName, query, update, options);
+        return this.mongoQueryRunner.updateMany(metadata.tableName, query, update, options);
     }
 
     /**
@@ -556,7 +549,7 @@ export class MongoEntityManager extends EntityManager {
      */
     updateOne<Entity>(entityClassOrName: EntityTarget<Entity>, query: ObjectLiteral, update: ObjectLiteral, options?: ReplaceOneOptions): Promise<UpdateWriteOpResult> {
         const metadata = this.connection.getMetadata(entityClassOrName);
-        return this.queryRunner.updateOne(metadata.tableName, query, update, options);
+        return this.mongoQueryRunner.updateOne(metadata.tableName, query, update, options);
     }
 
     // -------------------------------------------------------------------------
@@ -664,7 +657,7 @@ export class MongoEntityManager extends EntityManager {
      */
     protected applyEntityTransformationToCursor<Entity>(metadata: EntityMetadata, cursor: Cursor<Entity> | AggregationCursor<Entity>) {
         const ParentCursor = PlatformTools.load("mongodb").Cursor;
-        const queryRunner = this.queryRunner;
+        const queryRunner = this.mongoQueryRunner;
         cursor.toArray = function (callback?: MongoCallback<Entity[]>) {
             if (callback) {
                 ParentCursor.prototype.toArray.call(this, (error: MongoError, results: Entity[]): void => {
diff --git a/src/metadata-builder/EntityMetadataBuilder.ts b/src/metadata-builder/EntityMetadataBuilder.ts
index 24c164bcdc..79de051f34 100644
--- a/src/metadata-builder/EntityMetadataBuilder.ts
+++ b/src/metadata-builder/EntityMetadataBuilder.ts
@@ -666,7 +666,7 @@ export class EntityMetadataBuilder {
         entityMetadata.relations.forEach(relation => {
 
             // compute inverse side (related) entity metadatas for all relation metadatas
-            const inverseEntityMetadata = entityMetadatas.find(m => m.target === relation.type || (typeof relation.type === "string" && m.targetName === relation.type));
+            const inverseEntityMetadata = entityMetadatas.find(m => m.target === relation.type || (typeof relation.type === "string" && (m.targetName === relation.type || m.givenTableName === relation.type)));
             if (!inverseEntityMetadata)
                 throw new Error("Entity metadata for " + entityMetadata.name + "#" + relation.propertyPath + " was not found. Check if you specified a correct entity object and if it's connected in the connection options.");
 
diff --git a/src/metadata-builder/EntityMetadataValidator.ts b/src/metadata-builder/EntityMetadataValidator.ts
index 9e3fe488d5..ef4c7d693c 100644
--- a/src/metadata-builder/EntityMetadataValidator.ts
+++ b/src/metadata-builder/EntityMetadataValidator.ts
@@ -87,6 +87,8 @@ export class EntityMetadataValidator {
                     throw new DataTypeNotSupportedError(column, normalizedColumn, driver.options.type);
                 if (column.length && driver.withLengthColumnTypes.indexOf(normalizedColumn) === -1)
                     throw new Error(`Column ${column.propertyName} of Entity ${entityMetadata.name} does not support length property.`);
+                if (column.type === "enum" && !column.enum && !column.enumName)
+                    throw new Error(`Column "${column.propertyName}" of Entity "${entityMetadata.name}" is defined as enum, but missing "enum" or "enumName" properties.`);
             });
         }
 
diff --git a/src/metadata-builder/JunctionEntityMetadataBuilder.ts b/src/metadata-builder/JunctionEntityMetadataBuilder.ts
index 961a861734..e0c229b6c9 100644
--- a/src/metadata-builder/JunctionEntityMetadataBuilder.ts
+++ b/src/metadata-builder/JunctionEntityMetadataBuilder.ts
@@ -83,6 +83,8 @@ export class JunctionEntityMetadataBuilder {
                         collation: referencedColumn.collation,
                         zerofill: referencedColumn.zerofill,
                         unsigned: referencedColumn.zerofill ? true : referencedColumn.unsigned,
+                        enum: referencedColumn.enum,
+                        enumName: referencedColumn.enumName,
                         nullable: false,
                         primary: true,
                     }
@@ -121,6 +123,8 @@ export class JunctionEntityMetadataBuilder {
                         collation: inverseReferencedColumn.collation,
                         zerofill: inverseReferencedColumn.zerofill,
                         unsigned: inverseReferencedColumn.zerofill ? true : inverseReferencedColumn.unsigned,
+                        enum: inverseReferencedColumn.enum,
+                        enumName: inverseReferencedColumn.enumName,
                         name: columnName,
                         nullable: false,
                         primary: true,
diff --git a/src/metadata-builder/RelationJoinColumnBuilder.ts b/src/metadata-builder/RelationJoinColumnBuilder.ts
index 7cdc354880..22c3f7b0ba 100644
--- a/src/metadata-builder/RelationJoinColumnBuilder.ts
+++ b/src/metadata-builder/RelationJoinColumnBuilder.ts
@@ -159,8 +159,10 @@ export class RelationJoinColumnBuilder {
                             zerofill: referencedColumn.zerofill,
                             unsigned: referencedColumn.unsigned,
                             comment: referencedColumn.comment,
+                            enum: referencedColumn.enum,
+                            enumName: referencedColumn.enumName,
                             primary: relation.isPrimary,
-                            nullable: relation.isNullable
+                            nullable: relation.isNullable,
                         }
                     }
                 });
diff --git a/src/metadata/ColumnMetadata.ts b/src/metadata/ColumnMetadata.ts
index 42447ad7ec..a2631768e1 100644
--- a/src/metadata/ColumnMetadata.ts
+++ b/src/metadata/ColumnMetadata.ts
@@ -544,9 +544,9 @@ export class ColumnMetadata {
             return Object.keys(map).length > 0 ? map : undefined;
 
         } else { // no embeds - no problems. Simply return column property name and its value of the entity
-            if (this.relationMetadata && entity[this.propertyName] && entity[this.propertyName] instanceof Object) {
+            if (this.relationMetadata && entity[this.relationMetadata.propertyName] && entity[this.relationMetadata.propertyName] instanceof Object) {
                 const map = this.relationMetadata.joinColumns.reduce((map, joinColumn) => {
-                    const value = joinColumn.referencedColumn!.getEntityValueMap(entity[this.propertyName]);
+                    const value = joinColumn.referencedColumn!.getEntityValueMap(entity[this.relationMetadata!.propertyName]);
                     if (value === undefined) return map;
                     return OrmUtils.mergeDeep(map, value);
                 }, {});
diff --git a/src/naming-strategy/DefaultNamingStrategy.ts b/src/naming-strategy/DefaultNamingStrategy.ts
index e34dd792a7..f67e44b0d0 100644
--- a/src/naming-strategy/DefaultNamingStrategy.ts
+++ b/src/naming-strategy/DefaultNamingStrategy.ts
@@ -29,7 +29,7 @@ export class DefaultNamingStrategy implements NamingStrategyInterface {
 
     columnName(propertyName: string, customName: string, embeddedPrefixes: string[]): string {
         const name = customName || propertyName;
-        
+
         if (embeddedPrefixes.length)
             return camelCase(embeddedPrefixes.join("_")) + titleCase(name);
 
@@ -103,11 +103,12 @@ export class DefaultNamingStrategy implements NamingStrategyInterface {
         return "IDX_" + RandomGenerator.sha1(key).substr(0, 26);
     }
 
-    checkConstraintName(tableOrName: Table|string, expression: string): string {
+    checkConstraintName(tableOrName: Table|string, expression: string, isEnum?: boolean): string {
         const tableName = tableOrName instanceof Table ? tableOrName.name : tableOrName;
         const replacedTableName = tableName.replace(".", "_");
         const key = `${replacedTableName}_${expression}`;
-        return "CHK_" + RandomGenerator.sha1(key).substr(0, 26);
+        const name = "CHK_" + RandomGenerator.sha1(key).substr(0, 26);
+        return isEnum ? `${name}_ENUM` : name;
     }
 
     exclusionConstraintName(tableOrName: Table|string, expression: string): string {
diff --git a/src/naming-strategy/NamingStrategyInterface.ts b/src/naming-strategy/NamingStrategyInterface.ts
index 50342d32b1..c4988a6d92 100644
--- a/src/naming-strategy/NamingStrategyInterface.ts
+++ b/src/naming-strategy/NamingStrategyInterface.ts
@@ -69,8 +69,13 @@ export interface NamingStrategyInterface {
 
     /**
      * Gets the name of the check constraint.
+     *
+     * "isEnum" parameter is used to indicate if this check constraint used
+     * to handle "simple-enum" type for databases that are not supporting "enum"
+     * type out of the box. If "true", constraint is ignored during CHECK constraints
+     * synchronization.
      */
-    checkConstraintName(tableOrName: Table|string, expression: string): string;
+    checkConstraintName(tableOrName: Table|string, expression: string, isEnum?: boolean): string;
 
     /**
      * Gets the name of the exclusion constraint.
diff --git a/src/query-builder/relation-id/RelationIdLoader.ts b/src/query-builder/relation-id/RelationIdLoader.ts
index f4a3f42e3c..5f06d27e49 100644
--- a/src/query-builder/relation-id/RelationIdLoader.ts
+++ b/src/query-builder/relation-id/RelationIdLoader.ts
@@ -32,17 +32,34 @@ export class RelationIdLoader {
                 if (relationIdAttr.queryBuilderFactory)
                     throw new Error("Additional condition can not be used with ManyToOne or OneToOne owner relations.");
 
+                const duplicates: Array<string> = [];
                 const results = rawEntities.map(rawEntity => {
                     const result: ObjectLiteral = {};
+                    const duplicateParts: Array<string> = [];
                     relationIdAttr.relation.joinColumns.forEach(joinColumn => {
                         result[joinColumn.databaseName] = this.connection.driver.prepareHydratedValue(rawEntity[DriverUtils.buildColumnAlias(this.connection.driver, relationIdAttr.parentAlias, joinColumn.databaseName)], joinColumn.referencedColumn!);
+                        const duplicatePart = `${joinColumn.databaseName}:${result[joinColumn.databaseName]}`;
+                        if (duplicateParts.indexOf(duplicatePart) === -1) {
+                            duplicateParts.push(duplicatePart);
+                        }
                     });
 
                     relationIdAttr.relation.entityMetadata.primaryColumns.forEach(primaryColumn => {
                         result[primaryColumn.databaseName] = this.connection.driver.prepareHydratedValue(rawEntity[DriverUtils.buildColumnAlias(this.connection.driver, relationIdAttr.parentAlias, primaryColumn.databaseName)], primaryColumn);
+                        const duplicatePart = `${primaryColumn.databaseName}:${result[primaryColumn.databaseName]}`;
+                        if (duplicateParts.indexOf(duplicatePart) === -1) {
+                            duplicateParts.push(duplicatePart);
+                        }
                     });
+
+                    duplicateParts.sort();
+                    const duplicate = duplicateParts.join("::");
+                    if (duplicates.indexOf(duplicate) !== -1) {
+                        return null;
+                    }
+                    duplicates.push(duplicate);
                     return result;
-                });
+                }).filter(v => v);
 
                 return {
                     relationIdAttribute: relationIdAttr,
@@ -60,14 +77,31 @@ export class RelationIdLoader {
                 const tableName = relation.inverseEntityMetadata.tableName; // category
                 const tableAlias = relationIdAttr.alias || tableName; // if condition (custom query builder factory) is set then relationIdAttr.alias defined
 
+                const duplicates: Array<string> = [];
                 const parameters: ObjectLiteral = {};
                 const condition = rawEntities.map((rawEntity, index) => {
-                    return joinColumns.map(joinColumn => {
+                    const duplicateParts: Array<string> = [];
+                    const parameterParts: ObjectLiteral = {};
+                    const queryPart = joinColumns.map(joinColumn => {
                         const parameterName = joinColumn.databaseName + index;
-                        parameters[parameterName] = rawEntity[DriverUtils.buildColumnAlias(this.connection.driver, relationIdAttr.parentAlias, joinColumn.referencedColumn!.databaseName)];
+                        const parameterValue = rawEntity[DriverUtils.buildColumnAlias(this.connection.driver, relationIdAttr.parentAlias, joinColumn.referencedColumn!.databaseName)];
+                        const duplicatePart = `${tableAlias}:${joinColumn.propertyPath}:${parameterValue}`;
+                        if (duplicateParts.indexOf(duplicatePart) !== -1) {
+                            return "";
+                        }
+                        duplicateParts.push(duplicatePart);
+                        parameterParts[parameterName] = parameterValue;
                         return tableAlias + "." + joinColumn.propertyPath + " = :" + parameterName;
-                    }).join(" AND ");
-                }).map(condition => "(" + condition + ")")
+                    }).filter(v => v).join(" AND ");
+                    duplicateParts.sort();
+                    const duplicate = duplicateParts.join("::");
+                    if (duplicates.indexOf(duplicate) !== -1) {
+                        return "";
+                    }
+                    duplicates.push(duplicate);
+                    Object.assign(parameters, parameterParts);
+                    return queryPart;
+                }).filter(v => v).map(condition => "(" + condition + ")")
                     .join(" OR ");
 
                 // ensure we won't perform redundant queries for joined data which was not found in selection
@@ -139,13 +173,30 @@ export class RelationIdLoader {
                     return { relationIdAttribute: relationIdAttr, results: [] };
 
                 const parameters: ObjectLiteral = {};
+                const duplicates: Array<string> = [];
                 const joinColumnConditions = mappedColumns.map((mappedColumn, index) => {
-                    return Object.keys(mappedColumn).map(key => {
+                    const duplicateParts: Array<string> = [];
+                    const parameterParts: ObjectLiteral = {};
+                    const queryPart = Object.keys(mappedColumn).map(key => {
                         const parameterName = key + index;
-                        parameters[parameterName] = mappedColumn[key];
+                        const parameterValue = mappedColumn[key];
+                        const duplicatePart = `${junctionAlias}:${key}:${parameterValue}`;
+                        if (duplicateParts.indexOf(duplicatePart) !== -1) {
+                            return "";
+                        }
+                        duplicateParts.push(duplicatePart);
+                        parameterParts[parameterName] = parameterValue;
                         return junctionAlias + "." + key + " = :" + parameterName;
-                    }).join(" AND ");
-                });
+                    }).filter(s => s).join(" AND ");
+                    duplicateParts.sort();
+                    const duplicate = duplicateParts.join("::");
+                    if (duplicates.indexOf(duplicate) !== -1) {
+                        return "";
+                    }
+                    duplicates.push(duplicate);
+                    Object.assign(parameters, parameterParts);
+                    return queryPart;
+                }).filter(s => s);
 
                 const inverseJoinColumnCondition = inverseJoinColumns.map(joinColumn => {
                     return junctionAlias + "." + joinColumn.propertyPath + " = " + inverseSideTableAlias + "." + joinColumn.referencedColumn!.propertyPath;
diff --git a/src/query-runner/BaseQueryRunner.ts b/src/query-runner/BaseQueryRunner.ts
index 6e73f226e5..9afc083896 100644
--- a/src/query-runner/BaseQueryRunner.ts
+++ b/src/query-runner/BaseQueryRunner.ts
@@ -97,9 +97,9 @@ export abstract class BaseQueryRunner {
     // Protected Abstract Methods
     // -------------------------------------------------------------------------
 
-    protected abstract async loadTables(tablePaths: string[]): Promise<Table[]>;
+    protected abstract loadTables(tablePaths: string[]): Promise<Table[]>;
 
-    protected abstract async loadViews(tablePaths: string[]): Promise<View[]>;
+    protected abstract loadViews(tablePaths: string[]): Promise<View[]>;
 
     // -------------------------------------------------------------------------
     // Public Methods
diff --git a/src/repository/TreeRepository.ts b/src/repository/TreeRepository.ts
index 725a947a3d..b263f3e56c 100644
--- a/src/repository/TreeRepository.ts
+++ b/src/repository/TreeRepository.ts
@@ -265,7 +265,7 @@ export class TreeRepository<Entity> extends Repository<Entity> {
         const parentEntityId = this.metadata.primaryColumns[0].getEntityValue(entity);
         const childRelationMaps = relationMaps.filter(relationMap => relationMap.parentId === parentEntityId);
         const childIds = new Set(childRelationMaps.map(relationMap => relationMap.id));
-        entity[childProperty] = entities.filter(entity => childIds.has(entity[this.metadata.primaryColumns[0].propertyName]));
+        entity[childProperty] = entities.filter(entity => childIds.has(this.metadata.primaryColumns[0].getEntityValue(entity)));
         entity[childProperty].forEach((childEntity: any) => {
             this.buildChildrenEntityTree(childEntity, entities, relationMaps);
         });
@@ -279,7 +279,7 @@ export class TreeRepository<Entity> extends Repository<Entity> {
             if (!parentRelationMap)
                 return false;
 
-            return entity[this.metadata.primaryColumns[0].propertyName] === parentRelationMap.parentId;
+            return this.metadata.primaryColumns[0].getEntityValue(entity) === parentRelationMap.parentId;
         });
         if (parentEntity) {
             entity[parentProperty] = parentEntity;
diff --git a/test/functional/commands/entity/Post.ts b/test/functional/commands/entity/Post.ts
new file mode 100644
index 0000000000..94e6f92ea5
--- /dev/null
+++ b/test/functional/commands/entity/Post.ts
@@ -0,0 +1,14 @@
+import { PrimaryGeneratedColumn, Entity, Column, CreateDateColumn } from "../../../../src";
+
+@Entity()
+export class Post {
+
+    @PrimaryGeneratedColumn()
+    id?: number;
+
+    @Column()
+    title: string;
+
+    @CreateDateColumn()
+    readonly createdAt?: Date;
+}
diff --git a/test/functional/commands/migration-create.ts b/test/functional/commands/migration-create.ts
new file mode 100644
index 0000000000..a20970af0c
--- /dev/null
+++ b/test/functional/commands/migration-create.ts
@@ -0,0 +1,122 @@
+import sinon from "sinon";
+import { ConnectionOptions, ConnectionOptionsReader, DatabaseType } from "../../../src";
+import { 
+    setupTestingConnections, 
+    createTestingConnections, 
+    closeTestingConnections, 
+    reloadTestingDatabases 
+} from "../../utils/test-utils";
+import { CommandUtils } from "../../../src/commands/CommandUtils";
+import { MigrationCreateCommand } from "../../../src/commands/MigrationCreateCommand";
+import { Post } from "./entity/Post";
+import { resultsTemplates } from "./templates/result-templates-create";
+
+describe("commands - migration create", () => {
+    let connectionOptions: ConnectionOptions[];
+    let createFileStub: sinon.SinonStub;
+    let timerStub: sinon.SinonFakeTimers;
+    let getConnectionOptionsStub: sinon.SinonStub;
+    let migrationCreateCommand: MigrationCreateCommand;
+    let connectionOptionsReader: ConnectionOptionsReader;
+    let baseConnectionOptions: ConnectionOptions;
+
+    const enabledDrivers = [
+        "postgres",
+        "mssql",
+        "mysql",
+        "mariadb",
+        "sqlite",
+        "better-sqlite3",
+        "oracle",
+        "cockroachdb"
+    ] as DatabaseType[];
+
+    // simulate args: `npm run typeorm migration:run -- -n test-migration -d test-directory`
+    const testHandlerArgs = (options: Record<string, any>) => ({
+        "$0": "test",
+        "_": ["test"],
+        "name": "test-migration",
+        "dir": "test-directory",
+        ...options
+    });
+
+    before(async () => {
+        // clean out db from any prior tests in case previous state impacts the generated migrations
+        const connections = await createTestingConnections({
+            entities: [],
+            enabledDrivers
+        });
+        await reloadTestingDatabases(connections);
+        await closeTestingConnections(connections);
+
+        connectionOptions = setupTestingConnections({
+            entities: [Post],
+            enabledDrivers
+        });
+        connectionOptionsReader = new ConnectionOptionsReader();
+        migrationCreateCommand = new MigrationCreateCommand();
+        createFileStub = sinon.stub(CommandUtils, "createFile");
+
+        timerStub = sinon.useFakeTimers(1610975184784);
+    });
+
+    after(async () => {
+        timerStub.restore();
+        createFileStub.restore();
+    });
+
+    afterEach(async () => {
+        getConnectionOptionsStub.restore();
+    });
+
+    it("should write regular empty migration file when no option is passed", async () => {
+        for (const connectionOption of connectionOptions) {
+            createFileStub.resetHistory();
+
+            baseConnectionOptions = await connectionOptionsReader.get(connectionOption.name as string);
+            getConnectionOptionsStub = sinon.stub(ConnectionOptionsReader.prototype, "get").resolves({
+                ...baseConnectionOptions,
+                entities: [Post]
+            });
+
+            await migrationCreateCommand.handler(testHandlerArgs({
+                "connection": connectionOption.name
+            }));
+
+            // compare against control test strings in results-templates.ts
+            sinon.assert.calledWith(
+                createFileStub,
+                sinon.match(/test-directory.*test-migration.ts/),
+                sinon.match(resultsTemplates.control)
+            );
+
+            getConnectionOptionsStub.restore();
+        }
+    });
+
+    it("should write Javascript empty migration file when option is passed", async () => {
+        for (const connectionOption of connectionOptions) {
+            createFileStub.resetHistory();
+
+            baseConnectionOptions = await connectionOptionsReader.get(connectionOption.name as string);
+            getConnectionOptionsStub = sinon.stub(ConnectionOptionsReader.prototype, "get").resolves({
+                ...baseConnectionOptions,
+                entities: [Post]
+            });
+
+            await migrationCreateCommand.handler(testHandlerArgs({
+                "connection": connectionOption.name,
+                "outputJs": true
+            }));
+
+            // compare against control test strings in results-templates.ts
+            sinon.assert.calledWith(
+                createFileStub,
+                sinon.match(/test-directory.*test-migration.js/),
+                sinon.match(resultsTemplates.javascript)
+            );
+
+            getConnectionOptionsStub.restore();
+        }
+    });
+});
diff --git a/test/functional/commands/migration-generate.ts b/test/functional/commands/migration-generate.ts
new file mode 100644
index 0000000000..3af86c2bdd
--- /dev/null
+++ b/test/functional/commands/migration-generate.ts
@@ -0,0 +1,110 @@
+import sinon from "sinon";
+import { ConnectionOptions, ConnectionOptionsReader, DatabaseType } from "../../../src";
+import { 
+    setupTestingConnections, 
+    createTestingConnections, 
+    closeTestingConnections, 
+    reloadTestingDatabases 
+} from "../../utils/test-utils";
+import { CommandUtils } from "../../../src/commands/CommandUtils";
+import { MigrationGenerateCommand } from "../../../src/commands/MigrationGenerateCommand";
+import { Post } from "./entity/Post";
+import { resultsTemplates } from "./templates/result-templates-generate";
+
+describe("commands - migration generate", () => {
+    let connectionOptions: ConnectionOptions[];
+    let createFileStub: sinon.SinonStub;
+    let timerStub: sinon.SinonFakeTimers;
+    let getConnectionOptionsStub: sinon.SinonStub;
+    let migrationGenerateCommand: MigrationGenerateCommand;
+    let connectionOptionsReader: ConnectionOptionsReader;
+    let baseConnectionOptions: ConnectionOptions;
+
+    const enabledDrivers = [
+        "mysql",
+    ] as DatabaseType[];
+
+    // simulate args: `npm run typeorm migration:run -- -n test-migration -d test-directory`
+    const testHandlerArgs = (options: Record<string, any>) => ({
+        "$0": "test",
+        "_": ["test"],
+        "name": "test-migration",
+        "dir": "test-directory",
+        ...options
+    });
+
+    before(async () => {
+        // clean out db from any prior tests in case previous state impacts the generated migrations
+        const connections = await createTestingConnections({
+            entities: [],
+            enabledDrivers
+        });
+        await reloadTestingDatabases(connections);
+        await closeTestingConnections(connections);
+
+        connectionOptions = setupTestingConnections({
+            entities: [Post],
+            enabledDrivers
+        });
+        connectionOptionsReader = new ConnectionOptionsReader();
+        migrationGenerateCommand = new MigrationGenerateCommand();
+        createFileStub = sinon.stub(CommandUtils, "createFile");
+
+        timerStub = sinon.useFakeTimers(1610975184784);
+    });
+
+    after(async () => {
+        timerStub.restore();
+        createFileStub.restore();
+    });
+
+    it("writes regular migration file when no option is passed", async () => {
+        for (const connectionOption of connectionOptions) {
+            createFileStub.resetHistory();
+
+            baseConnectionOptions = await connectionOptionsReader.get(connectionOption.name as string);
+            getConnectionOptionsStub = sinon.stub(ConnectionOptionsReader.prototype, "get").resolves({
+                ...baseConnectionOptions,
+                entities: [Post]
+            });
+
+            await migrationGenerateCommand.handler(testHandlerArgs({
+                "connection": connectionOption.name
+            }));
+
+            // compare against control test strings in results-templates.ts
+            sinon.assert.calledWith(
+                createFileStub,
+                sinon.match(/test-directory.*test-migration.ts/),
+                sinon.match(resultsTemplates.control)
+            );
+
+            getConnectionOptionsStub.restore();
+        }
+    });
+
+    it("writes Javascript printed file when option is passed", async () => {
+        for (const connectionOption of connectionOptions) {
+            createFileStub.resetHistory();
+
+            baseConnectionOptions = await connectionOptionsReader.get(connectionOption.name as string);
+            getConnectionOptionsStub = sinon.stub(ConnectionOptionsReader.prototype, "get").resolves({
+                ...baseConnectionOptions,
+                entities: [Post]
+            });
+
+            await migrationGenerateCommand.handler(testHandlerArgs({
+                "connection": connectionOption.name,
+                "outputJs": true
+            }));
+            
+            // compare against "pretty" test strings in results-templates.ts
+            sinon.assert.calledWith(
+                createFileStub,
+                sinon.match(/test-directory.*test-migration.js/),
+                sinon.match(resultsTemplates.javascript)
+            );
+            getConnectionOptionsStub.restore();
+        }
+    });
+});
diff --git a/test/functional/commands/templates/result-templates-create.ts b/test/functional/commands/templates/result-templates-create.ts
new file mode 100644
index 0000000000..044dd40603
--- /dev/null
+++ b/test/functional/commands/templates/result-templates-create.ts
@@ -0,0 +1,23 @@
+export const resultsTemplates: Record<string, any> = {
+    control: `import {MigrationInterface, QueryRunner} from "typeorm";
+
+export class testMigration1610975184784 implements MigrationInterface {
+
+    public async up(queryRunner: QueryRunner): Promise<void> {
+    }
+
+    public async down(queryRunner: QueryRunner): Promise<void> {
+    }
+
+}`,
+    javascript: `const { MigrationInterface, QueryRunner } = require("typeorm");
+
+module.exports = class testMigration1610975184784 {
+
+    async up(queryRunner) {
+    }
+
+    async down(queryRunner) {
+    }
+}`
+};
diff --git a/test/functional/commands/templates/result-templates-generate.ts b/test/functional/commands/templates/result-templates-generate.ts
new file mode 100644
index 0000000000..548b4d015d
--- /dev/null
+++ b/test/functional/commands/templates/result-templates-generate.ts
@@ -0,0 +1,29 @@
+export const resultsTemplates: Record<string, any> = {
+    control: `import {MigrationInterface, QueryRunner} from "typeorm";
+
+export class testMigration1610975184784 implements MigrationInterface {
+    name = 'testMigration1610975184784'
+
+    public async up(queryRunner: QueryRunner): Promise<void> {
+        await queryRunner.query("CREATE TABLE \`post\` (\`id\` int NOT NULL AUTO_INCREMENT, \`title\` varchar(255) NOT NULL, \`createdAt\` datetime(6) NOT NULL DEFAULT CURRENT_TIMESTAMP(6), PRIMARY KEY (\`id\`)) ENGINE=InnoDB");
+    }
+
+    public async down(queryRunner: QueryRunner): Promise<void> {
+        await queryRunner.query("DROP TABLE \`post\`");
+    }
+
+}`,
+    javascript: `const { MigrationInterface, QueryRunner } = require("typeorm");
+
+module.exports = class testMigration1610975184784 {
+    name = 'testMigration1610975184784'
+
+    async up(queryRunner) {
+        await queryRunner.query("CREATE TABLE \`post\` (\`id\` int NOT NULL AUTO_INCREMENT, \`title\` varchar(255) NOT NULL, \`createdAt\` datetime(6) NOT NULL DEFAULT CURRENT_TIMESTAMP(6), PRIMARY KEY (\`id\`)) ENGINE=InnoDB");
+    }
+
+    async down(queryRunner) {
+        await queryRunner.query("DROP TABLE \`post\`");
+    }
+}`
+};
diff --git a/test/functional/database-schema/column-types/mssql/column-types-mssql.ts b/test/functional/database-schema/column-types/mssql/column-types-mssql.ts
index 97a2610bbc..9dac9de6ee 100644
--- a/test/functional/database-schema/column-types/mssql/column-types-mssql.ts
+++ b/test/functional/database-schema/column-types/mssql/column-types-mssql.ts
@@ -155,11 +155,11 @@ describe("database schema > column types > mssql", () => { // https://github.com
         table!.findColumnByName("geometry1")!.type.should.be.equal("geometry");
         table!.findColumnByName("simpleArray")!.type.should.be.equal("ntext");
         table!.findColumnByName("simpleJson")!.type.should.be.equal("ntext");
-        table!.findColumnByName("simpleEnum")!.type.should.be.equal("simple-enum");
+        table!.findColumnByName("simpleEnum")!.type.should.be.equal("nvarchar");
         table!.findColumnByName("simpleEnum")!.enum![0].should.be.equal("A");
         table!.findColumnByName("simpleEnum")!.enum![1].should.be.equal("B");
         table!.findColumnByName("simpleEnum")!.enum![2].should.be.equal("C");
-        table!.findColumnByName("simpleClassEnum1")!.type.should.be.equal("simple-enum");
+        table!.findColumnByName("simpleClassEnum1")!.type.should.be.equal("nvarchar");
         table!.findColumnByName("simpleClassEnum1")!.enum![0].should.be.equal("apple");
         table!.findColumnByName("simpleClassEnum1")!.enum![1].should.be.equal("pineapple");
         table!.findColumnByName("simpleClassEnum1")!.enum![2].should.be.equal("banana");
diff --git a/test/functional/database-schema/column-types/postgres-enum/entity/Post.ts b/test/functional/database-schema/column-types/postgres-enum/entity/Post.ts
index 9d32a1fc4b..bb310dda31 100644
--- a/test/functional/database-schema/column-types/postgres-enum/entity/Post.ts
+++ b/test/functional/database-schema/column-types/postgres-enum/entity/Post.ts
@@ -11,9 +11,12 @@ export class Post {
     @Column("enum", { enum: ["A", "B", "C"] })
     enum: string;
 
+    @Column("enum", { enum: ["A", "B", "C"], array: true })
+    enumArray: string[];
+
     @Column("simple-enum", { enum: ["A", "B", "C"] })
     simpleEnum: string;
 
     @Column()
     name: string;
-}
\ No newline at end of file
+}
diff --git a/test/functional/database-schema/column-types/postgres-enum/postgres-enum.ts b/test/functional/database-schema/column-types/postgres-enum/postgres-enum.ts
index fef3c5d53a..b2c1985e23 100644
--- a/test/functional/database-schema/column-types/postgres-enum/postgres-enum.ts
+++ b/test/functional/database-schema/column-types/postgres-enum/postgres-enum.ts
@@ -26,15 +26,19 @@ describe("database schema > column types > postgres-enum", () => {
 
         const post = new Post();
         post.enum = "A";
+        post.enumArray = ["A", "B"];
         post.simpleEnum = "A";
         post.name = "Post #1";
         await postRepository.save(post);
 
         const loadedPost = (await postRepository.findOne(1))!;
         loadedPost.enum.should.be.equal(post.enum);
+        loadedPost.enumArray.should.be.deep.equal(post.enumArray);
         loadedPost.simpleEnum.should.be.equal(post.simpleEnum);
 
         table!.findColumnByName("enum")!.type.should.be.equal("enum");
+        table!.findColumnByName("enumArray")!.type.should.be.equal("enum");
+        table!.findColumnByName("enumArray")!.isArray.should.be.true;
         table!.findColumnByName("simpleEnum")!.type.should.be.equal("enum");
     })));
 
@@ -170,7 +174,30 @@ describe("database schema > column types > postgres-enum", () => {
         await queryRunner.release();
     })));
 
-    it("should change ENUM column and revert change", () => Promise.all(connections.map(async connection => {
+    it("should change ENUM array column in to non-array and revert change", () => Promise.all(connections.map(async connection => {
+
+        const queryRunner = connection.createQueryRunner();
+        let table = await queryRunner.getTable("post");
+        let enumColumn = table!.findColumnByName("enumArray")!;
+        let changedColumn = enumColumn.clone();
+        changedColumn.isArray = false;
+
+        await queryRunner.changeColumn(table!, enumColumn, changedColumn);
+
+        table = await queryRunner.getTable("post");
+        changedColumn = table!.findColumnByName("enumArray")!;
+        changedColumn.isArray.should.be.false;
+
+        await queryRunner.executeMemoryDownSql();
+
+        table = await queryRunner.getTable("post");
+        enumColumn = table!.findColumnByName("enumArray")!;
+        enumColumn.isArray.should.be.true;
+
+        await queryRunner.release();
+    })));
+
+    it("should change ENUM value and revert change", () => Promise.all(connections.map(async connection => {
 
         const queryRunner = connection.createQueryRunner();
         let table = await queryRunner.getTable("post");
@@ -191,6 +218,94 @@ describe("database schema > column types > postgres-enum", () => {
         await queryRunner.release();
     })));
 
+    it("should change `enumName` and revert change", () => Promise.all(connections.map(async connection => {
+        const queryRunner = connection.createQueryRunner();
+
+        // add `enumName`
+        let table = await queryRunner.getTable("post");
+        const column = table!.findColumnByName("enum")!;
+        const newColumn = column.clone();
+        newColumn.enumName = "PostTypeEnum"
+
+        // change column
+        await queryRunner.changeColumn(table!, column, newColumn)
+
+        // check if `enumName` changed
+        table = await queryRunner.getTable("post");
+        let changedColumn = table!.findColumnByName("enum")!;
+        expect(changedColumn.enumName).to.equal("PostTypeEnum");
+
+        // revert changes
+        await queryRunner.executeMemoryDownSql()
+
+        // check if `enumName` reverted
+        table = await queryRunner.getTable("post");
+        changedColumn = table!.findColumnByName("enum")!;
+        expect(changedColumn.enumName).to.undefined;
+
+        await queryRunner.release();
+    })));
+
+    it("should not create new type if same `enumName` is used more than once", () => Promise.all(connections.map(async connection => {
+        const queryRunner = connection.createQueryRunner();
+
+        const table = new Table({
+            name: "my_table",
+            columns: [
+                {
+                    name: "enum1",
+                    type: "enum",
+                    enum: ["Apple", "Banana", "Cherry"],
+                    enumName: "Fruits"
+                },
+                {
+                    name: "enum2",
+                    type: "enum",
+                    enum: ["Apple", "Banana", "Cherry"],
+                    enumName: "Fruits"
+                },
+                {
+                    name: "enum3",
+                    type: "enum",
+                    enumName: "Fruits"
+                },
+            ]
+        });
+
+        await queryRunner.createTable(table)
+
+        // revert changes
+        await queryRunner.executeMemoryDownSql()
+
+        await queryRunner.release();
+    })));
+
+    it("should change both ENUM value and ENUM name and revert change", () => Promise.all(connections.map(async connection => {
+
+        const queryRunner = connection.createQueryRunner();
+        let table = await queryRunner.getTable("post");
+        const enumColumn = table!.findColumnByName("enum")!;
+        const changedColumn = enumColumn.clone();
+        changedColumn.enum = ["C", "D", "E"];
+        changedColumn.enumName = "my_enum_type";
+
+        await queryRunner.changeColumn(table!, enumColumn, changedColumn);
+
+        table = await queryRunner.getTable("post");
+        const columnAfterChange = table!.findColumnByName("enum")!
+        columnAfterChange.enum!.should.be.eql(["C", "D", "E"]);
+        columnAfterChange.enumName!.should.be.eql("my_enum_type");
+
+        await queryRunner.executeMemoryDownSql();
+
+        table = await queryRunner.getTable("post");
+        const columnAfterRevert = table!.findColumnByName("enum")!
+        columnAfterRevert.enum!.should.be.eql(["A", "B", "C"]);
+        expect(columnAfterRevert.enumName).to.undefined
+
+        await queryRunner.release();
+    })));
+
     it("should rename ENUM when column renamed and revert rename", () => Promise.all(connections.map(async connection => {
 
         const queryRunner = connection.createQueryRunner();
diff --git a/test/functional/database-schema/column-types/sqlite/column-types-sqlite.ts b/test/functional/database-schema/column-types/sqlite/column-types-sqlite.ts
index 64a2213f22..87e2f79ec2 100644
--- a/test/functional/database-schema/column-types/sqlite/column-types-sqlite.ts
+++ b/test/functional/database-schema/column-types/sqlite/column-types-sqlite.ts
@@ -128,11 +128,11 @@ describe("database schema > column types > sqlite", () => {
         table!.findColumnByName("datetime")!.type.should.be.equal("datetime");
         table!.findColumnByName("simpleArray")!.type.should.be.equal("text");
         table!.findColumnByName("simpleJson")!.type.should.be.equal("text");
-        table!.findColumnByName("simpleEnum")!.type.should.be.equal("simple-enum");
+        table!.findColumnByName("simpleEnum")!.type.should.be.equal("varchar");
         table!.findColumnByName("simpleEnum")!.enum![0].should.be.equal("A");
         table!.findColumnByName("simpleEnum")!.enum![1].should.be.equal("B");
         table!.findColumnByName("simpleEnum")!.enum![2].should.be.equal("C");
-        table!.findColumnByName("simpleClassEnum1")!.type.should.be.equal("simple-enum");
+        table!.findColumnByName("simpleClassEnum1")!.type.should.be.equal("varchar");
         table!.findColumnByName("simpleClassEnum1")!.enum![0].should.be.equal("apple");
         table!.findColumnByName("simpleClassEnum1")!.enum![1].should.be.equal("pineapple");
         table!.findColumnByName("simpleClassEnum1")!.enum![2].should.be.equal("banana");
diff --git a/test/functional/database-schema/enums/entity/EnumEntity.ts b/test/functional/database-schema/enums/entity/EnumEntity.ts
index 14ef116374..005a90f960 100644
--- a/test/functional/database-schema/enums/entity/EnumEntity.ts
+++ b/test/functional/database-schema/enums/entity/EnumEntity.ts
@@ -86,4 +86,12 @@ export class EnumEntity {
     })
     enumWithoutdefault: StringEnum;
 
+    @Column({
+        type: 'enum',
+        enum: StringEnum,
+        nullable: true,
+        default: null,
+    })
+    nullableDefaultEnum: StringEnum;
+
 }
diff --git a/test/functional/database-schema/enums/enums.ts b/test/functional/database-schema/enums/enums.ts
index 18537b7218..1a541e496c 100644
--- a/test/functional/database-schema/enums/enums.ts
+++ b/test/functional/database-schema/enums/enums.ts
@@ -9,7 +9,7 @@ describe("database schema > enums", () => {
     before(async () => {
         connections = await createTestingConnections({
             entities: [__dirname + "/entity/*{.js,.ts}"],
-            enabledDrivers: ["postgres", "mysql"]
+            enabledDrivers: ["postgres", "mysql", "mariadb"]
         });
     });
     beforeEach(() => reloadTestingDatabases(connections));
@@ -60,4 +60,14 @@ describe("database schema > enums", () => {
 
     })));
 
+    it("should not generate queries when no model changes", () => Promise.all(connections.map(async connection => {
+        await connection.driver.createSchemaBuilder().build();
+
+        const sqlInMemory = await connection.driver.createSchemaBuilder().log();
+
+        sqlInMemory.upQueries.length.should.be.equal(0);
+        sqlInMemory.downQueries.length.should.be.equal(0);
+
+    })));
+
 });
diff --git a/test/github-issues/1532/entity/User.ts b/test/github-issues/1532/entity/User.ts
new file mode 100644
index 0000000000..2b7dc030d5
--- /dev/null
+++ b/test/github-issues/1532/entity/User.ts
@@ -0,0 +1,27 @@
+import {PrimaryColumn, Column} from "../../../../src";
+import {Entity} from "../../../../src/decorator/entity/Entity";
+
+@Entity()
+export class User {
+
+    @PrimaryColumn()
+    id: number;
+
+    @Column({ type: "varchar", array: true })
+    array: string[];
+
+    @Column({ type: "varchar", array: true, nullable: false })
+    nonNullArray: string[];
+
+    @Column({ type: "varchar", array: true, nullable: false, default: [] })
+    emptyArrayDefault: string[];
+
+    @Column({ type: "varchar", array: true, nullable: false, default: ["a", "b", "c"] })
+    filledArrayDefault: string[];
+
+    @Column({ type: "varchar", array: true, nullable: false, default: "{}" })
+    emptyArrayDefaultString: string[];
+
+    @Column({ type: "varchar", array: true, nullable: false, default: "{a,b,c}" })
+    filledArrayDefaultString: string[];
+}
diff --git a/test/github-issues/1532/issue-1532.ts b/test/github-issues/1532/issue-1532.ts
new file mode 100644
index 0000000000..d4aba89bee
--- /dev/null
+++ b/test/github-issues/1532/issue-1532.ts
@@ -0,0 +1,30 @@
+import "reflect-metadata";
+import {Connection} from "../../../src";
+import {createTestingConnections, closeTestingConnections} from "../../utils/test-utils";
+import {User} from "./entity/User";
+
+describe("github issues > #1532 Array type default value doesnt work. PostgreSQL", () => {
+    let connections: Connection[];
+    before(async () => connections = await createTestingConnections({
+        migrations: [],
+        enabledDrivers: ["postgres"],
+        schemaCreate: false,
+        dropSchema: true,
+        entities: [User],
+    }));
+    after(() => closeTestingConnections(connections));
+
+    it("can recognize model changes", () => Promise.all(connections.map(async connection => {
+        const sqlInMemory = await connection.driver.createSchemaBuilder().log();
+        sqlInMemory.upQueries.length.should.be.greaterThan(0);
+        sqlInMemory.downQueries.length.should.be.greaterThan(0);
+    })));
+
+    it("does not generate when no model changes", () => Promise.all(connections.map(async connection => {
+        await connection.driver.createSchemaBuilder().build();
+
+        const sqlInMemory = await connection.driver.createSchemaBuilder().log();
+        sqlInMemory.upQueries.length.should.be.equal(0);
+        sqlInMemory.downQueries.length.should.be.equal(0);
+    })));
+});
diff --git a/test/github-issues/2758/entity/Party.ts b/test/github-issues/2758/entity/Party.ts
new file mode 100644
index 0000000000..65aa88f09d
--- /dev/null
+++ b/test/github-issues/2758/entity/Party.ts
@@ -0,0 +1,7 @@
+import {Entity, PrimaryGeneratedColumn} from "../../../../src";
+
+@Entity()
+export class Party {
+    @PrimaryGeneratedColumn("uuid")
+    id: string;
+}
diff --git a/test/github-issues/2758/entity/Person.ts b/test/github-issues/2758/entity/Person.ts
new file mode 100644
index 0000000000..81df69fe66
--- /dev/null
+++ b/test/github-issues/2758/entity/Person.ts
@@ -0,0 +1,14 @@
+import {Entity, JoinColumn, OneToOne, PrimaryColumn} from "../../../../src";
+import {Party} from "./Party";
+
+@Entity()
+export class Person {
+
+    // Party ID also acts as PK for Person (ie. inheritance)
+    @PrimaryColumn("uuid")
+    id: string;
+
+    @OneToOne(() => Party, { cascade: true, onDelete: "CASCADE" })
+    @JoinColumn({ name: "id" })
+    party: Party;
+}
diff --git a/test/github-issues/2758/entity/User.ts b/test/github-issues/2758/entity/User.ts
new file mode 100644
index 0000000000..14e14ff3b0
--- /dev/null
+++ b/test/github-issues/2758/entity/User.ts
@@ -0,0 +1,15 @@
+import {Column, Entity, OneToOne, PrimaryGeneratedColumn} from "../../../../src";
+import {Person} from "./Person";
+
+@Entity()
+export class User {
+
+    @PrimaryGeneratedColumn("uuid")
+    id: string;
+
+    @Column("uuid")
+    personId: string;
+
+    @OneToOne(() => Person, { cascade: true, onDelete: "CASCADE" })
+    person: Person;
+}
diff --git a/test/github-issues/2758/issue-2758.ts b/test/github-issues/2758/issue-2758.ts
new file mode 100644
index 0000000000..f63ca32772
--- /dev/null
+++ b/test/github-issues/2758/issue-2758.ts
@@ -0,0 +1,66 @@
+import "reflect-metadata";
+import { Connection } from "../../../src/connection/Connection";
+import { closeTestingConnections, createTestingConnections } from "../../utils/test-utils";
+import {Person} from "./entity/Person";
+import {User} from "./entity/User";
+
+describe.skip("github issues > #2758 Insert fails when related OneToOne entity's primary key is also a foreign key", () => {
+
+    let connections: Connection[];
+    before(async () => {
+        connections = await createTestingConnections({
+            entities: [__dirname + "/entity/*{.js,.ts}"],
+            enabledDrivers: ["postgres"],
+            schemaCreate: true,
+            dropSchema: true,
+        });
+    });
+    after(() => closeTestingConnections(connections));
+
+    it("should insert person with nested new party", () => Promise.all(connections.map(async connection => {
+
+        const repository = connection.getRepository(Person)
+        await connection.manager.save(repository.create({
+            party: { },
+        }));
+
+    })));
+
+    it("should insert user with nested new person", () => Promise.all(connections.map(async connection => {
+
+        const repository = connection.getRepository(User)
+        await connection.manager.save(repository.create({
+            person: { party: { } },
+        }))
+
+    })));
+
+    it("should insert a new user with existing person", () => Promise.all(connections.map(async connection => {
+
+        const personRepository = connection.getRepository(Person)
+        const person = await connection.manager.save(personRepository.create({
+            party: { }
+        }));
+
+        const userRepository = connection.getRepository(User)
+        await connection.manager.save(userRepository.create({
+            person: person,
+        }));
+
+    })));
+
+    it("should insert user with existing personId", () => Promise.all(connections.map(async connection => {
+
+        const personRepository = connection.getRepository(Person)
+        const person = await connection.manager.save(personRepository.create({
+            party: { },
+        }));
+
+        const userRepository = connection.getRepository(User)
+        await connection.manager.save(userRepository.create({
+            personId: person.id,
+        }));
+
+    })));
+
+});
diff --git a/test/github-issues/3246/entity/Broker.ts b/test/github-issues/3246/entity/Broker.ts
new file mode 100644
index 0000000000..e76afb001c
--- /dev/null
+++ b/test/github-issues/3246/entity/Broker.ts
@@ -0,0 +1,29 @@
+import { Entity, PrimaryGeneratedColumn, Column, CreateDateColumn, UpdateDateColumn, OneToMany } from "../../../../src";
+import { Order } from "./Order";
+
+@Entity()
+export class Broker {
+  
+  @PrimaryGeneratedColumn()
+  id: number;
+
+  @Column({ type: "varchar", nullable: true })
+  name: string;
+
+  @OneToMany(
+    (type) => Order,
+    (order) => order.company,
+    {
+      cascade: ["insert", "update"],
+      onDelete: "CASCADE",
+      nullable: true,
+    }
+  )
+  orders?: Order;
+
+  @CreateDateColumn()
+  createdDate: Date;
+
+  @UpdateDateColumn()
+  modifiedDate: Date;
+}
diff --git a/test/github-issues/3246/entity/Order.ts b/test/github-issues/3246/entity/Order.ts
new file mode 100644
index 0000000000..cfd434b371
--- /dev/null
+++ b/test/github-issues/3246/entity/Order.ts
@@ -0,0 +1,44 @@
+import { Entity, PrimaryGeneratedColumn, OneToOne, JoinColumn, Column, CreateDateColumn, UpdateDateColumn, ManyToOne } from "../../../../src";
+import { OrderCustomer } from "./OrderCustomer";
+import { Broker } from "./Broker";
+
+@Entity()
+export class Order {
+
+  @PrimaryGeneratedColumn()
+  id: number;
+
+  @Column({ type: "varchar", nullable: true })
+  orderReferenceNumber: string;
+
+  @ManyToOne(
+    () => Broker,
+    (broker) => broker.orders,
+    {
+      cascade: false,
+      nullable: false // starts working when set to true
+    }
+  )
+  company?: Broker;
+
+  @OneToOne(
+    () => OrderCustomer,
+    (orderCustomer) => orderCustomer.order,
+    {
+      cascade: ["insert", "update"],
+      onDelete: "CASCADE",
+      nullable: true,
+    }
+  )
+  @JoinColumn({ name: "orderCustomerId" })
+  orderCustomer?: OrderCustomer;
+
+  @Column({ type: "int", nullable: true })
+  orderCustomerId?: number;
+
+  @CreateDateColumn()
+  createdDate: Date;
+
+  @UpdateDateColumn()
+  modifiedDate: Date;
+}
diff --git a/test/github-issues/3246/entity/OrderCustomer.ts b/test/github-issues/3246/entity/OrderCustomer.ts
new file mode 100644
index 0000000000..b368cf203d
--- /dev/null
+++ b/test/github-issues/3246/entity/OrderCustomer.ts
@@ -0,0 +1,28 @@
+import { Order } from "./Order";
+import { Entity, PrimaryGeneratedColumn, Column, OneToOne, CreateDateColumn, UpdateDateColumn } from "../../../../src";
+
+@Entity()
+export class OrderCustomer {
+
+    @PrimaryGeneratedColumn()
+  id: number;
+
+  @Column({ type: "varchar", nullable: false })
+  name: string;
+
+  @OneToOne(
+    (type) => Order,
+    (order) => order.orderCustomer,
+    {
+    cascade: ["insert", "update"],
+    nullable: true,
+    },
+  )
+  order?: Order;
+
+  @CreateDateColumn()
+  createdDate: Date;
+
+  @UpdateDateColumn()
+  modifiedDate: Date;
+}
diff --git a/test/github-issues/3246/issue-3246.ts b/test/github-issues/3246/issue-3246.ts
new file mode 100644
index 0000000000..1fb38ae1d5
--- /dev/null
+++ b/test/github-issues/3246/issue-3246.ts
@@ -0,0 +1,44 @@
+import "reflect-metadata";
+import {createTestingConnections, closeTestingConnections, reloadTestingDatabases} from "../../utils/test-utils";
+import {Connection} from "../../../src/connection/Connection";
+import {expect} from "chai";
+import { Order } from "./entity/Order";
+import { OrderCustomer } from "./entity/OrderCustomer";
+import { OrderRepository } from "./repository/OrderRepository";
+import { Broker } from "./entity/Broker";
+import { BrokerRepository } from "./repository/BrokerRepository";
+
+describe("github issues > #3246 Saving an entity with a 1:1 cascading insert does not return id if entity has nullable many:one relationship", () => {
+
+    let connections: Connection[];
+    before(async () => connections = await createTestingConnections({
+        entities: [Order, OrderCustomer, Broker],
+        enabledDrivers: ["postgres"],
+        schemaCreate: true,
+        dropSchema: true,
+    }));
+
+    beforeEach(() => reloadTestingDatabases(connections));
+    after(() => closeTestingConnections(connections));
+
+    it("should insert and return the order with id", () => Promise.all(connections.map(async connection => {
+        let company = new Broker();
+        company.name = "Acme Inc.";
+
+        let order = new Order();
+        order.orderReferenceNumber = "abcd";
+
+        const orderCustomer = new OrderCustomer();
+        orderCustomer.name = "Dave";
+        order.orderCustomer = orderCustomer;
+
+        const myCompanyRepository = connection.manager.getCustomRepository(BrokerRepository);
+        const createdCompany = await myCompanyRepository.createBroker(company);
+        const myOrderRepository = connection.manager.getCustomRepository(OrderRepository);
+        order.company = createdCompany;
+
+        const result = await myOrderRepository.createOrder(order);
+
+        expect(result.id).not.to.be.undefined;
+    })));
+ });
diff --git a/test/github-issues/3246/repository/BrokerRepository.ts b/test/github-issues/3246/repository/BrokerRepository.ts
new file mode 100644
index 0000000000..2cfee853d8
--- /dev/null
+++ b/test/github-issues/3246/repository/BrokerRepository.ts
@@ -0,0 +1,9 @@
+import { EntityRepository, AbstractRepository } from "../../../../src";
+import { Broker } from "../entity/Broker";
+
+@EntityRepository(Broker)
+export class BrokerRepository extends AbstractRepository<Broker> {
+  async createBroker(broker: Broker) {
+    return this.repository.save(broker);
+  }
+}
diff --git a/test/github-issues/3246/repository/OrderRepository.ts b/test/github-issues/3246/repository/OrderRepository.ts
new file mode 100644
index 0000000000..5761c78dd0
--- /dev/null
+++ b/test/github-issues/3246/repository/OrderRepository.ts
@@ -0,0 +1,9 @@
+import { Order } from "../entity/Order";
+import { EntityRepository, AbstractRepository } from "../../../../src";
+
+@EntityRepository(Order)
+export class OrderRepository extends AbstractRepository<Order> {
+  async createOrder(order: Order) {
+    return this.repository.save(order);
+  }
+}
diff --git a/test/github-issues/4897/entity/SomeEntity.ts b/test/github-issues/4897/entity/SomeEntity.ts
new file mode 100644
index 0000000000..92f92af063
--- /dev/null
+++ b/test/github-issues/4897/entity/SomeEntity.ts
@@ -0,0 +1,33 @@
+import {Column, PrimaryGeneratedColumn} from "../../../../src";
+import {Entity} from "../../../../src";
+
+export type UserRoleType = 'user' | 'admin';
+export const userRoles = {
+    USER: 'user' as UserRoleType,
+    ADMIN: 'admin' as UserRoleType,
+}
+
+export enum UserRoles {
+    USER = 'user',
+    ADMIN = 'admin'
+}
+
+@Entity()
+export class SomeEntity {
+    @PrimaryGeneratedColumn()
+    id: number;
+
+    @Column({
+        type: "simple-enum",
+        enum: Object.values(userRoles),
+        default: userRoles.USER,
+    })
+    test: UserRoleType;
+
+    @Column({
+        type: "simple-enum",
+        enum: UserRoles,
+        default: UserRoles.USER,
+    })
+    test2: UserRoles;
+}
diff --git a/test/github-issues/4897/issue-4897.ts b/test/github-issues/4897/issue-4897.ts
new file mode 100644
index 0000000000..595de18f80
--- /dev/null
+++ b/test/github-issues/4897/issue-4897.ts
@@ -0,0 +1,30 @@
+import "reflect-metadata";
+import {Connection} from "../../../src";
+import {createTestingConnections, closeTestingConnections} from "../../utils/test-utils";
+import {SomeEntity} from "./entity/SomeEntity";
+
+describe("github issues > #4897 [MSSQL] Enum column definition removes and recreates constraint overwritting existing data", () => {
+    let connections: Connection[];
+    before(async () => connections = await createTestingConnections({
+        migrations: [],
+        enabledDrivers: ["mssql", "sqlite"],
+        schemaCreate: false,
+        dropSchema: true,
+        entities: [SomeEntity],
+    }));
+    after(() => closeTestingConnections(connections));
+
+    it("should recognize model changes", () => Promise.all(connections.map(async connection => {
+        const sqlInMemory = await connection.driver.createSchemaBuilder().log();
+        sqlInMemory.upQueries.length.should.be.greaterThan(0);
+        sqlInMemory.downQueries.length.should.be.greaterThan(0);
+    })));
+
+    it("should not generate queries when no model changes", () => Promise.all(connections.map(async connection => {
+        await connection.driver.createSchemaBuilder().build();
+
+        const sqlInMemory = await connection.driver.createSchemaBuilder().log();
+        sqlInMemory.upQueries.length.should.be.equal(0);
+        sqlInMemory.downQueries.length.should.be.equal(0);
+    })));
+});
diff --git a/test/github-issues/5275/entity/UserEntity.ts b/test/github-issues/5275/entity/UserEntity.ts
new file mode 100644
index 0000000000..13b9a64467
--- /dev/null
+++ b/test/github-issues/5275/entity/UserEntity.ts
@@ -0,0 +1,23 @@
+import {Column, Entity, PrimaryColumn} from "../../../../src";
+
+export enum Role {
+    GuildMaster = "Guild Master",
+    Officer = "Officer",
+    Boss = 'BOSS "LEVEL 80"',
+    Warrior = "Knight\\Rogue",
+    Number = 1,
+    PlayerAlt = "Player Alt"
+}
+
+
+@Entity()
+export class User {
+    @PrimaryColumn()
+    id: number;
+
+    @Column({ type: "enum", enum: Role, default: Role.GuildMaster })
+    role: Role;
+
+    @Column({ type: "enum", enum: Role, default: [Role.GuildMaster], array: true })
+    roles: Role[];
+}
diff --git a/test/github-issues/5275/issue-5275.ts b/test/github-issues/5275/issue-5275.ts
new file mode 100644
index 0000000000..deb73b4481
--- /dev/null
+++ b/test/github-issues/5275/issue-5275.ts
@@ -0,0 +1,59 @@
+import "reflect-metadata";
+import { Connection } from "../../../src";
+import {
+    closeTestingConnections,
+    createTestingConnections,
+    reloadTestingDatabases,
+} from "../../utils/test-utils";
+import {Role, User} from "./entity/UserEntity";
+
+describe("github issues > #5275 Enums with spaces are not converted properly.", () => {
+    let connections: Connection[];
+    before(
+        async () =>
+            (connections = await createTestingConnections({
+                entities: [User],
+                schemaCreate: true,
+                dropSchema: true,
+                enabledDrivers: ["postgres"],
+            }))
+    );
+
+    beforeEach(() => reloadTestingDatabases(connections));
+    after(() => closeTestingConnections(connections));
+
+    it("should correctly parse enums of strings with spaces", () => Promise.all(connections.map(async connection => {
+        const userRepository = connection.getRepository(User);
+        await userRepository.save({
+            id: 1,
+            roles: [
+                Role.GuildMaster,
+                Role.Officer,
+                Role.Boss,
+                Role.Warrior,
+                Role.Number,
+                Role.PlayerAlt,
+            ],
+        });
+        const user = await userRepository.findOneOrFail(1);
+        user.roles.should.deep.equal(["Guild Master", "Officer", 'BOSS "LEVEL 80"', "Knight\\Rogue", 1, "Player Alt"]);
+    })));
+
+    it("should correctly parse non-array enums with spaces", () => Promise.all(connections.map(async connection => {
+        const userRepository = connection.getRepository(User);
+        await userRepository.save([
+            { id: 1 },
+            { id: 2, role: Role.Boss },
+            { id: 3, role: Role.Warrior }
+        ]);
+
+        const user1 = await userRepository.findOneOrFail(1);
+        user1.role.should.equal("Guild Master");
+
+        const user2 = await userRepository.findOneOrFail(2);
+        user2.role.should.equal('BOSS "LEVEL 80"');
+
+        const user3 = await userRepository.findOneOrFail(3);
+        user3.role.should.equal("Knight\\Rogue");
+    })));
+});
diff --git a/test/github-issues/5478/entity/UserEntity.ts b/test/github-issues/5478/entity/UserEntity.ts
new file mode 100644
index 0000000000..3afe228c29
--- /dev/null
+++ b/test/github-issues/5478/entity/UserEntity.ts
@@ -0,0 +1,16 @@
+import {Column, PrimaryGeneratedColumn} from "../../../../src";
+import {Entity} from "../../../../src";
+
+enum UserType {
+    ADMIN = "ADMIN",
+    USER = "USER",
+}
+
+@Entity("user")
+export class UserEntity {
+    @PrimaryGeneratedColumn()
+    id: number;
+
+    @Column({ type: "enum", enum: UserType })
+    userType: UserType;
+}
diff --git a/test/github-issues/5478/issue-5478.ts b/test/github-issues/5478/issue-5478.ts
new file mode 100644
index 0000000000..f734af5ae4
--- /dev/null
+++ b/test/github-issues/5478/issue-5478.ts
@@ -0,0 +1,45 @@
+import "reflect-metadata";
+import {Connection} from "../../../src";
+import {createTestingConnections, closeTestingConnections} from "../../utils/test-utils";
+import {expect} from "chai";
+import {UserEntity} from "./entity/UserEntity";
+
+describe("github issues > #5478 Setting enumName doesn't change how migrations get generated", () => {
+    let connections: Connection[];
+    before(async () => connections = await createTestingConnections({
+        migrations: [],
+        enabledDrivers: ["postgres"],
+        schemaCreate: true,
+        dropSchema: true,
+        entities: [UserEntity],
+    }));
+    after(() => closeTestingConnections(connections));
+
+    it("should correctly rename enum", () => Promise.all(connections.map(async connection => {
+        const queryRunner = connection.createQueryRunner();
+
+        // add `enumName`
+        let table = await queryRunner.getTable("user");
+        const column = table!.findColumnByName("userType")!;
+        const newColumn = column.clone();
+        newColumn.enumName = "UserTypeEnum"
+
+        // change column
+        await queryRunner.changeColumn(table!, column, newColumn)
+
+        // check if `enumName` changed
+        table = await queryRunner.getTable("user");
+        let changedColumn = table!.findColumnByName("userType")!;
+        expect(changedColumn.enumName).to.equal("UserTypeEnum");
+
+        // revert changes
+        await queryRunner.executeMemoryDownSql()
+
+        // check if `enumName` reverted
+        table = await queryRunner.getTable("user");
+        changedColumn = table!.findColumnByName("userType")!;
+        expect(changedColumn.enumName).to.undefined;
+
+        await queryRunner.release();
+    })));
+});
diff --git a/test/github-issues/5691/enity/Child1.ts b/test/github-issues/5691/enity/Child1.ts
new file mode 100644
index 0000000000..81a844e36b
--- /dev/null
+++ b/test/github-issues/5691/enity/Child1.ts
@@ -0,0 +1,21 @@
+import {Entity, ManyToOne, OneToMany, PrimaryGeneratedColumn, RelationId} from "../../../../src";
+import {Root} from "./Root";
+import {Shared} from "./Shared";
+
+@Entity()
+export class Child1 {
+    @PrimaryGeneratedColumn("uuid")
+    public id?: string;
+
+    @ManyToOne(() => Root, entity => entity.allChild1)
+    public root?: Root;
+
+    @RelationId("root")
+    public rootId?: string;
+
+    @OneToMany(() => Shared, entity => entity.child1)
+    public allShared?: Array<Shared>;
+
+    @RelationId("allShared")
+    public allSharedId?: Array<string>;
+}
diff --git a/test/github-issues/5691/enity/Child2.ts b/test/github-issues/5691/enity/Child2.ts
new file mode 100644
index 0000000000..acff5920bd
--- /dev/null
+++ b/test/github-issues/5691/enity/Child2.ts
@@ -0,0 +1,21 @@
+import {ManyToMany, PrimaryGeneratedColumn, RelationId, OneToMany, Entity} from "../../../../src";
+import {Root} from "./Root";
+import {Shared} from "./Shared";
+
+@Entity()
+export class Child2 {
+    @PrimaryGeneratedColumn("uuid")
+    public id?: string;
+
+    @ManyToMany(() => Root, entity => entity.allChild2)
+    public allRoot?: Root;
+
+    @RelationId("allRoot")
+    public allRootId?: Array<string>;
+
+    @OneToMany(() => Shared, entity => entity.child2)
+    public allShared?: Array<Shared>;
+
+    @RelationId("allShared")
+    public allSharedId?: Array<string>;
+}
diff --git a/test/github-issues/5691/enity/Root.ts b/test/github-issues/5691/enity/Root.ts
new file mode 100644
index 0000000000..d45afb79bf
--- /dev/null
+++ b/test/github-issues/5691/enity/Root.ts
@@ -0,0 +1,29 @@
+import {Entity, JoinTable, ManyToMany, OneToMany, PrimaryGeneratedColumn, RelationId} from "../../../../src";
+import {Child1} from "./Child1";
+import {Child2} from "./Child2";
+import {Shared} from "./Shared";
+
+@Entity()
+export class Root {
+    @PrimaryGeneratedColumn("uuid")
+    public id?: string;
+
+    @OneToMany(() => Shared, entity => entity.root)
+    public allShared?: Array<Shared>;
+
+    @RelationId("allShared")
+    public allSharedId?: Array<string>;
+
+    @OneToMany(() => Child1, entity => entity.root)
+    public allChild1?: Array<Child1>;
+
+    @RelationId("allChild1")
+    public allChild1Id?: Array<string>;
+
+    @ManyToMany(() => Child2, entity => entity.allRoot)
+    @JoinTable()
+    public allChild2?: Array<Child2>;
+
+    @RelationId("allChild2")
+    public allChild2Id?: Array<string>;
+}
diff --git a/test/github-issues/5691/enity/Shared.ts b/test/github-issues/5691/enity/Shared.ts
new file mode 100644
index 0000000000..b15a85906a
--- /dev/null
+++ b/test/github-issues/5691/enity/Shared.ts
@@ -0,0 +1,44 @@
+import {Entity, JoinColumn, ManyToOne, OneToMany, PrimaryGeneratedColumn, RelationId} from "../../../../src";
+import {Child1} from "./Child1";
+import {Child2} from "./Child2";
+import {Root} from "./Root";
+
+@Entity()
+export class Shared {
+    @PrimaryGeneratedColumn("uuid")
+    public id?: string;
+
+    @ManyToOne(() => Root, entity => entity.allShared)
+    @JoinColumn()
+    public root?: Root;
+
+    @RelationId("root")
+    public rootId?: string;
+
+    @ManyToOne(() => Child1, entity => entity.allShared)
+    @JoinColumn()
+    public child1?: Child1;
+
+    @RelationId("child1")
+    public child1Id?: string;
+
+    @ManyToOne(() => Child2, entity => entity.allShared)
+    @JoinColumn()
+    public child2?: Child2;
+
+    @RelationId("child2")
+    public child2Id?: string;
+
+    @ManyToOne(() => Shared, entity => entity.allShared)
+    @JoinColumn()
+    public shared?: Shared;
+
+    @RelationId("shared")
+    public sharedId?: string;
+
+    @OneToMany(() => Shared, entity => entity.shared)
+    public allShared?: Array<Shared>;
+
+    @RelationId("allShared")
+    public allSharedId?: Array<string>;
+}
diff --git a/test/github-issues/5691/issue-5691.ts b/test/github-issues/5691/issue-5691.ts
new file mode 100644
index 0000000000..e2da8285c1
--- /dev/null
+++ b/test/github-issues/5691/issue-5691.ts
@@ -0,0 +1,125 @@
+import "reflect-metadata";
+import {createTestingConnections, closeTestingConnections, reloadTestingDatabases} from "../../utils/test-utils";
+import {Connection} from "../../../src";
+import {expect} from "chai";
+import {Child1} from "./enity/Child1";
+import {Child2} from "./enity/Child2";
+import {Root} from "./enity/Root";
+import {Shared} from "./enity/Shared";
+
+describe("github issues > #5691 RelationId is too slow", () => {
+    const setupFixtures = async (connection: Connection, allChild2: Array<Child2>): Promise<void> => {
+        const root = new Root();
+        root.allChild2 = allChild2;
+        await connection.getRepository(Root).save(root);
+
+        const rootAllShared: Array<Shared> = [];
+        for (let indexShared = 0; indexShared < allChild2.length; indexShared ++) {
+            const rootShared = new Shared();
+            rootShared.root = root;
+            rootAllShared.push(rootShared);
+        }
+        await connection.getRepository(Shared).save(rootAllShared);
+
+        const savePromises: Array<Promise<unknown>> = [];
+        for (let indexChild1 = 0; indexChild1 < allChild2.length; indexChild1 ++) {
+            const rootChild1 = new Child1();
+            rootChild1.root = root;
+            await connection.getRepository(Child1).save(rootChild1);
+
+            for (const child2 of allChild2) {
+                const rootChild1Child2 = new Shared();
+                rootChild1Child2.root = root;
+                rootChild1Child2.child1 = rootChild1;
+                rootChild1Child2.child2 = child2;
+                savePromises.push(connection.getRepository(Shared).save(rootChild1Child2));
+            }
+            for (const shared of rootAllShared) {
+                const rootChild1Shared = new Shared();
+                rootChild1Shared.root = root;
+                rootChild1Shared.child1 = rootChild1;
+                rootChild1Shared.shared = shared;
+                savePromises.push(connection.getRepository(Shared).save(rootChild1Shared));
+            }
+        }
+        await Promise.all(savePromises);
+    };
+
+    let connections: Connection[];
+    before(async () => connections = await createTestingConnections({
+        entities: [
+            Root,
+            Child1,
+            Child2,
+            Shared,
+        ],
+        schemaCreate: true,
+        dropSchema: true,
+    }));
+    beforeEach(() => reloadTestingDatabases(connections));
+    after(() => closeTestingConnections(connections));
+
+    it("should be as fast as separate queries", () => Promise.all(connections.map(async connection => {
+        const child21 = new Child2();
+        const child22 = new Child2();
+        const child23 = new Child2();
+        const child24 = new Child2();
+        const child25 = new Child2();
+        await Promise.all([
+            connection.getRepository(Child2).save(child21),
+            connection.getRepository(Child2).save(child22),
+            connection.getRepository(Child2).save(child23),
+            connection.getRepository(Child2).save(child24),
+            connection.getRepository(Child2).save(child25),
+        ]);
+
+        await Promise.all([
+            setupFixtures(connection, [child21, child22, child23]),
+            // To understand the problem deeper add more fixtures.
+            // It will take forever.
+            // setupFixtures(connection, [child22, child23, child24]),
+            // setupFixtures(connection, [child23, child24, child25]),
+            // setupFixtures(connection, [child24, child25, child21]),
+            // setupFixtures(connection, [child25, child21, child22]),
+            // setupFixtures(connection, [child21, child22, child23]),
+            // setupFixtures(connection, [child22, child23, child24]),
+            // setupFixtures(connection, [child23, child24, child25]),
+            // setupFixtures(connection, [child24, child25, child21]),
+            // setupFixtures(connection, [child25, child21, child22]),
+        ]);
+
+        const test1Start = new Date().getTime();
+        // 54 rows for 1 root
+        await connection.getRepository(Root).find({
+            relations: [
+                "allChild1",
+                "allChild1.allShared",
+                "allChild2",
+            ],
+        });
+        // 21 rows 1 root
+        await connection.getRepository(Root).find({
+            relations: [
+                "allShared",
+            ],
+        });
+        const test1End = new Date().getTime();
+
+        const test2Start = new Date().getTime();
+        // 1134 rows 1 root
+        await connection.getRepository(Root).find({
+            relations: [
+                "allChild1",
+                "allChild1.allShared",
+                "allChild2",
+                "allShared",
+            ],
+        });
+        const test2End = new Date().getTime();
+
+        expect(test2End - test2Start).to.be.lessThan(
+            (test1End - test1Start) * 15, // yes, even 15 times slower, because amount of data requires more time.
+            "a single call should be not as more as 15 times slower than multi calls",
+        );
+    })));
+});
diff --git a/test/github-issues/5871/entity/SomeEntity.ts b/test/github-issues/5871/entity/SomeEntity.ts
new file mode 100644
index 0000000000..6e5a600ea6
--- /dev/null
+++ b/test/github-issues/5871/entity/SomeEntity.ts
@@ -0,0 +1,16 @@
+import {Column, PrimaryGeneratedColumn} from "../../../../src";
+import {Entity} from "../../../../src";
+
+enum Test {
+    TEST1 = 'testing (brackets)',
+    TEST2 = 'testing (brackers too)',
+}
+
+@Entity()
+export class SomeEntity {
+    @PrimaryGeneratedColumn()
+    id: number;
+
+    @Column({ type: "enum", enum: Test })
+    test: Test;
+}
diff --git a/test/github-issues/5871/issue-5871.ts b/test/github-issues/5871/issue-5871.ts
new file mode 100644
index 0000000000..c76c856199
--- /dev/null
+++ b/test/github-issues/5871/issue-5871.ts
@@ -0,0 +1,30 @@
+import "reflect-metadata";
+import {Connection} from "../../../src";
+import {createTestingConnections, closeTestingConnections} from "../../utils/test-utils";
+import {SomeEntity} from "./entity/SomeEntity";
+
+describe("github issues > #5871 Migration generate does not play well with mysql enum with parentheses in the enum value", () => {
+    let connections: Connection[];
+    before(async () => connections = await createTestingConnections({
+        migrations: [],
+        enabledDrivers: ["mysql"],
+        schemaCreate: false,
+        dropSchema: true,
+        entities: [SomeEntity],
+    }));
+    after(() => closeTestingConnections(connections));
+
+    it("should recognize model changes", () => Promise.all(connections.map(async connection => {
+        const sqlInMemory = await connection.driver.createSchemaBuilder().log();
+        sqlInMemory.upQueries.length.should.be.greaterThan(0);
+        sqlInMemory.downQueries.length.should.be.greaterThan(0);
+    })));
+
+    it("should not generate queries when no model changes", () => Promise.all(connections.map(async connection => {
+        await connection.driver.createSchemaBuilder().build();
+
+        const sqlInMemory = await connection.driver.createSchemaBuilder().log();
+        sqlInMemory.upQueries.length.should.be.equal(0);
+        sqlInMemory.downQueries.length.should.be.equal(0);
+    })));
+});
diff --git a/test/github-issues/6115/entity/v1/MetricEntity.ts b/test/github-issues/6115/entity/v1/MetricEntity.ts
new file mode 100644
index 0000000000..92f6f03091
--- /dev/null
+++ b/test/github-issues/6115/entity/v1/MetricEntity.ts
@@ -0,0 +1,29 @@
+import { Column, PrimaryGeneratedColumn } from "../../../../../src";
+import { Entity } from "../../../../../src";
+
+export enum Operator {
+    LT = "lt",
+    LE = "le",
+    EQ = "eq",
+    NE = "ne",
+    GE = "ge",
+    GT = "gt"
+}
+
+@Entity()
+export class Metric {
+    @PrimaryGeneratedColumn()
+    id!: number;
+
+    @Column({ type: "enum", enum: Operator, default: Operator.EQ })
+    defaultOperator!: string;
+
+    @Column({ type: "enum", enum: Operator })
+    defaultOperator2!: string;
+
+    @Column({ type: "enum", enum: Operator, default: Operator.EQ })
+    defaultOperator3!: string;
+
+    @Column({ type: "enum", enum: Operator, default: Operator.EQ })
+    defaultOperator4!: string;
+}
diff --git a/test/github-issues/6115/entity/v2/MetricEntity.ts b/test/github-issues/6115/entity/v2/MetricEntity.ts
new file mode 100644
index 0000000000..67d2c7a5ef
--- /dev/null
+++ b/test/github-issues/6115/entity/v2/MetricEntity.ts
@@ -0,0 +1,29 @@
+import { Column, PrimaryGeneratedColumn } from "../../../../../src";
+import { Entity } from "../../../../../src";
+
+export enum Operator {
+    LT = "lessthan",
+    LE = "lessequal",
+    EQ = "equal",
+    NE = "notequal",
+    GE = "greaterequal",
+    GT = "greaterthan"
+}
+
+@Entity()
+export class Metric {
+    @PrimaryGeneratedColumn()
+    id!: number;
+
+    @Column({ type: "enum", enum: Operator, default: Operator.EQ })
+    defaultOperator!: string;
+
+    @Column({ type: "enum", enum: Operator, default: Operator.EQ })
+    defaultOperator2!: string;
+
+    @Column({ type: "enum", enum: Operator })
+    defaultOperator3!: string;
+
+    @Column({ type: "enum", enum: Operator, default: Operator.GT })
+    defaultOperator4!: string;
+}
diff --git a/test/github-issues/6115/issue-6115.ts b/test/github-issues/6115/issue-6115.ts
new file mode 100644
index 0000000000..f1f80d293f
--- /dev/null
+++ b/test/github-issues/6115/issue-6115.ts
@@ -0,0 +1,87 @@
+import "reflect-metadata";
+import {Connection, createConnection} from "../../../src";
+import {closeTestingConnections, createTestingConnections, setupSingleTestingConnection} from "../../utils/test-utils";
+import {fail} from "assert";
+import {expect} from "chai";
+
+describe("github issues > #6115 Down migration for enums with defaults are wrong", () => {
+    let connections: Connection[];
+    before(async () => connections = await createTestingConnections({
+        enabledDrivers: ["postgres"],
+        entities: [__dirname + "/entity/v1/*{.js,.ts}"],
+        dropSchema: true,
+        schemaCreate: true
+    }));
+    after(() => closeTestingConnections(connections));
+
+    it("should change schema when enum definition changes", () => Promise.all(connections.map(async _connection => {
+        const options = setupSingleTestingConnection(
+            _connection.options.type,
+            {
+                name: `${_connection.name}-v2`,
+                entities: [__dirname + "/entity/v2/*{.js,.ts}"],
+                dropSchema: false,
+                schemaCreate: false
+            }
+        );
+        if (!options) {
+            fail();
+            return;
+        }
+
+        const connection = await createConnection(options);
+        const queryRunner = connection.createQueryRunner();
+
+        const sqlInMemory = await connection.driver
+            .createSchemaBuilder()
+            .log();
+
+        const upQueries = sqlInMemory.upQueries.map(
+            query => query.query
+        );
+        const downQueries = sqlInMemory.downQueries.map(
+            query => query.query
+        );
+
+        // update entity
+        for (const query of upQueries) {
+            await connection.query(query)
+        }
+
+        let table = await queryRunner.getTable("metric");
+        let defaultOperator = table!.findColumnByName("defaultOperator");
+        expect(defaultOperator!.enum).to.deep.equal(["lessthan", "lessequal", "equal", "notequal", "greaterequal", "greaterthan"]);
+        expect(defaultOperator!.default).to.equal(`'equal'`);
+
+        let defaultOperator2 = table!.findColumnByName("defaultOperator2");
+        expect(defaultOperator2!.default).to.equal(`'equal'`);
+
+        let defaultOperator3 = table!.findColumnByName("defaultOperator3");
+        expect(defaultOperator3!.default).to.be.undefined
+
+        let defaultOperator4 = table!.findColumnByName("defaultOperator4");
+        expect(defaultOperator4!.default).to.equal(`'greaterthan'`);
+
+        // revert update
+        for (const query of downQueries.reverse()) {
+            await connection.query(query)
+        }
+
+        table = await queryRunner.getTable("metric");
+        defaultOperator = table!.findColumnByName("defaultOperator");
+        expect(defaultOperator!.enum).to.deep.equal(["lt", "le", "eq", "ne", "ge", "gt"]);
+        expect(defaultOperator!.default).to.equal(`'eq'`);
+
+        defaultOperator2 = table!.findColumnByName("defaultOperator2");
+        expect(defaultOperator2!.default).to.be.undefined
+
+        defaultOperator3 = table!.findColumnByName("defaultOperator3");
+        expect(defaultOperator3!.default).to.equal(`'eq'`);
+
+        defaultOperator4 = table!.findColumnByName("defaultOperator4");
+        expect(defaultOperator4!.default).to.equal(`'eq'`);
+
+        await queryRunner.release();
+        await connection.close();
+    })));
+});
diff --git a/test/github-issues/6471/entity/SomeEntity.ts b/test/github-issues/6471/entity/SomeEntity.ts
new file mode 100644
index 0000000000..102206ecd5
--- /dev/null
+++ b/test/github-issues/6471/entity/SomeEntity.ts
@@ -0,0 +1,35 @@
+import {Column, Unique, PrimaryGeneratedColumn} from "../../../../src";
+import {Entity} from "../../../../src";
+
+export enum CreationMechanism {
+    SOURCE_A = 'SOURCE_A',
+    SOURCE_B = 'SOURCE_B',
+    SOURCE_C = 'SOURCE_C',
+    SOURCE_D = 'SOURCE_D'
+}
+
+@Entity({ name: 'some_entity' })
+@Unique([
+    'field1',
+    'field2',
+])
+export class SomeEntity {
+    @PrimaryGeneratedColumn()
+    id: number;
+
+    @Column()
+    field1: string;
+
+    @Column()
+    field2: string;
+
+    @Column({
+        type     : 'enum',
+        enumName : 'creation_mechanism_enum',
+        enum     : CreationMechanism,
+    })
+    creationMechanism: CreationMechanism;
+
+    @Column({ nullable: false, default: () => 'now()' })
+    createdAt: Date;
+}
diff --git a/test/github-issues/6471/issue-6471.ts b/test/github-issues/6471/issue-6471.ts
new file mode 100644
index 0000000000..48e3cce46a
--- /dev/null
+++ b/test/github-issues/6471/issue-6471.ts
@@ -0,0 +1,40 @@
+import "reflect-metadata";
+import {Connection} from "../../../src";
+import {createTestingConnections, closeTestingConnections} from "../../utils/test-utils";
+import {SomeEntity} from "./entity/SomeEntity";
+
+describe("github issues > #6471 Postgres enum is recreated in every new generated migration", () => {
+    let connections: Connection[];
+    before(async () => connections = await createTestingConnections({
+        migrations: [],
+        enabledDrivers: ["postgres"],
+        schemaCreate: false,
+        dropSchema: true,
+        entities: [SomeEntity],
+    }));
+    after(() => closeTestingConnections(connections));
+
+    it("should recognize model changes", () => Promise.all(connections.map(async connection => {
+        const sqlInMemory = await connection.driver.createSchemaBuilder().log();
+        sqlInMemory.upQueries.length.should.be.greaterThan(0);
+        sqlInMemory.downQueries.length.should.be.greaterThan(0);
+    })));
+
+    it("should not generate queries when no model changes", () => Promise.all(connections.map(async connection => {
+        await connection.driver.createSchemaBuilder().build();
+
+        const sqlInMemory = await connection.driver.createSchemaBuilder().log();
+        sqlInMemory.upQueries.length.should.be.equal(0);
+        sqlInMemory.downQueries.length.should.be.equal(0);
+    })));
+
+    it("should handle `enumName` change", () => Promise.all(connections.map(async connection => {
+        const entityMetadata = connection.getMetadata(SomeEntity)
+        const columnMetadata = entityMetadata.columns.find(column => column.databaseName === "creationMechanism")
+        columnMetadata!.enumName = "changed_enum_name"
+
+        const sqlInMemory = await connection.driver.createSchemaBuilder().log();
+        sqlInMemory.upQueries.length.should.be.greaterThan(0);
+        sqlInMemory.downQueries.length.should.be.greaterThan(0);
+    })));
+});
diff --git a/test/github-issues/7002/entity/Bar.ts b/test/github-issues/7002/entity/Bar.ts
new file mode 100644
index 0000000000..275d05f866
--- /dev/null
+++ b/test/github-issues/7002/entity/Bar.ts
@@ -0,0 +1,19 @@
+import {
+    Column,
+    Entity,
+    OneToOne,
+    PrimaryGeneratedColumn,
+} from "../../../../src";
+import { Foo } from "./Foo";
+
+@Entity()
+export class Bar {
+    @PrimaryGeneratedColumn("increment")
+    id: number;
+
+    @Column()
+    title: string;
+
+    @OneToOne(() => Foo, foo => foo.bar, { cascade: true, eager: true })
+    foo: Foo;
+}
diff --git a/test/github-issues/7002/entity/Foo.ts b/test/github-issues/7002/entity/Foo.ts
new file mode 100644
index 0000000000..455ea41dcf
--- /dev/null
+++ b/test/github-issues/7002/entity/Foo.ts
@@ -0,0 +1,25 @@
+import {
+    Column,
+    CreateDateColumn,
+    Entity,
+    JoinColumn,
+    OneToOne,
+    PrimaryColumn,
+} from "../../../../src";
+import { Bar } from "./Bar";
+
+@Entity()
+export class Foo {
+    @PrimaryColumn()
+    id: number;
+
+    @Column()
+    text: string;
+
+    @OneToOne(() => Bar, b => b.foo, { primary: true })
+    @JoinColumn({ name: "id", referencedColumnName: "id" })
+    bar: Bar;
+
+    @CreateDateColumn()
+    d: Date;
+}
diff --git a/test/github-issues/7002/issue-7002.ts b/test/github-issues/7002/issue-7002.ts
new file mode 100644
index 0000000000..ea040a8e4e
--- /dev/null
+++ b/test/github-issues/7002/issue-7002.ts
@@ -0,0 +1,40 @@
+import "reflect-metadata";
+
+import { Connection } from "../../../src/connection/Connection";
+import {
+    closeTestingConnections,
+    createTestingConnections,
+    reloadTestingDatabases,
+} from "../../utils/test-utils";
+import { Bar } from "./entity/Bar";
+import { Foo } from "./entity/Foo";
+
+describe("github issues > #7002 cascade save fails if the child entity has CreateDateColumn and PK as JoinColumn", () => {
+    let connections: Connection[];
+    before(
+        async () =>
+            (connections = await createTestingConnections({
+                entities: [__dirname + "/entity/*{.js,.ts}"],
+                schemaCreate: true,
+                dropSchema: true,
+                enabledDrivers: ["mysql", "postgres"],
+            }))
+    );
+    beforeEach(() => reloadTestingDatabases(connections));
+    after(() => closeTestingConnections(connections));
+
+    it("save an entity having a child entity with shared PK and CreatedDateColumn by cascade", () =>
+        Promise.all(
+            connections.map(async (connection) => {
+                const foo = new Foo();
+                foo.text = "This is a feature post";
+
+                await connection.manager.save(
+                    connection.getRepository(Bar).create({
+                        title: "Feature Post",
+                        foo,
+                    })
+                );
+            })
+        ));
+});
diff --git a/test/github-issues/7217/entity/UserEntity.ts b/test/github-issues/7217/entity/UserEntity.ts
new file mode 100644
index 0000000000..dce3c3b05e
--- /dev/null
+++ b/test/github-issues/7217/entity/UserEntity.ts
@@ -0,0 +1,23 @@
+import {Column, Entity, PrimaryGeneratedColumn} from "../../../../src";
+
+export enum UserRole {
+    PLAYER = 'PLAYER',
+    FULL_GAME = 'FULL_GAME',
+    SUPERVISOR = 'SUPERVISOR',
+    REPORTS = 'REPORTS',
+    ADMIN = 'ADMIN',
+}
+
+@Entity()
+export class User {
+    @PrimaryGeneratedColumn('uuid')
+    id: string;
+
+    @Column({
+        type: 'enum',
+        enum: UserRole,
+        array: true,
+        default: [UserRole.PLAYER],
+    })
+    roles: UserRole[];
+}
diff --git a/test/github-issues/7217/issue-7217.ts b/test/github-issues/7217/issue-7217.ts
new file mode 100644
index 0000000000..4e7154c8bc
--- /dev/null
+++ b/test/github-issues/7217/issue-7217.ts
@@ -0,0 +1,34 @@
+import "reflect-metadata";
+import {Connection} from "../../../src";
+import {createTestingConnections, closeTestingConnections} from "../../utils/test-utils";
+import {User} from "./entity/UserEntity";
+
+describe("github issues > #7217 Modifying enum fails migration if the enum is used in an array column", () => {
+    let connections: Connection[];
+    before(async () => connections = await createTestingConnections({
+        migrations: [],
+        enabledDrivers: ["postgres"],
+        schemaCreate: false,
+        dropSchema: true,
+        entities: [User],
+    }));
+    after(() => closeTestingConnections(connections));
+
+    it("should not generate queries when no model changes", () => Promise.all(connections.map(async connection => {
+        await connection.driver.createSchemaBuilder().build();
+
+        const sqlInMemory = await connection.driver.createSchemaBuilder().log();
+        sqlInMemory.upQueries.length.should.be.equal(0);
+        sqlInMemory.downQueries.length.should.be.equal(0);
+    })));
+
+    it("should correctly change enum", () => Promise.all(connections.map(async connection => {
+        const metadata = connection.getMetadata(User)
+        const columnMetadata = metadata.columns.find(column => column.databaseName === "roles")
+        columnMetadata!.enum = ["PLAYER", "FULL_GAME"]
+
+        const sqlInMemory = await connection.driver.createSchemaBuilder().log();
+        sqlInMemory.upQueries.length.should.be.greaterThan(0);
+        sqlInMemory.downQueries.length.should.be.greaterThan(0);
+    })));
+});
diff --git a/test/github-issues/7283/entity/AccessEvent.ts b/test/github-issues/7283/entity/AccessEvent.ts
new file mode 100644
index 0000000000..f7c617e199
--- /dev/null
+++ b/test/github-issues/7283/entity/AccessEvent.ts
@@ -0,0 +1,15 @@
+import {BaseEntity, Entity, JoinTable, ManyToMany, ManyToOne, PrimaryColumn} from "../../../../src";
+import {Employee} from "./Employee";
+
+@Entity()
+export class AccessEvent extends BaseEntity {
+    @PrimaryColumn({ type: 'varchar', length: 128 })
+    id!: string
+
+    @ManyToOne(() => Employee, (employee) => employee.accessEvents)
+    employee!: Employee
+
+    @ManyToMany(() => Employee)
+    @JoinTable()
+    employees: Employee[];
+}
diff --git a/test/github-issues/7283/entity/Employee.ts b/test/github-issues/7283/entity/Employee.ts
new file mode 100644
index 0000000000..5928255ed1
--- /dev/null
+++ b/test/github-issues/7283/entity/Employee.ts
@@ -0,0 +1,16 @@
+import {BaseEntity, Entity, OneToMany, PrimaryColumn} from "../../../../src";
+import {AccessEvent} from "./AccessEvent";
+
+enum Providers {
+    MS_GRAPH = 'msGraph',
+    ATLASSIAN = 'atlassian'
+}
+
+@Entity()
+export class Employee extends BaseEntity {
+    @PrimaryColumn({ type: 'enum', enum: Providers, enumName: "providerEnum" })
+    provider!: Providers
+
+    @OneToMany(() => AccessEvent, (accessEvent) => accessEvent.employee)
+    accessEvents!: AccessEvent[]
+}
diff --git a/test/github-issues/7283/issue-7283.ts b/test/github-issues/7283/issue-7283.ts
new file mode 100644
index 0000000000..204738e9ef
--- /dev/null
+++ b/test/github-issues/7283/issue-7283.ts
@@ -0,0 +1,35 @@
+import "reflect-metadata";
+import {Connection} from "../../../src";
+import {createTestingConnections, closeTestingConnections} from "../../utils/test-utils";
+import {AccessEvent} from "./entity/AccessEvent";
+import {Employee} from "./entity/Employee";
+import {expect} from "chai";
+
+describe("github issues > #7283 Generating Migration on ManyToOne/OneToMany + Primary enum column results in missing enum type in migration output", () => {
+    let connections: Connection[];
+    before(async () => connections = await createTestingConnections({
+        migrations: [],
+        enabledDrivers: ["mysql", "mariadb", "postgres"],
+        schemaCreate: false,
+        dropSchema: true,
+        entities: [AccessEvent, Employee],
+    }));
+    after(() => closeTestingConnections(connections));
+
+    it("should create tables with enum primary column", () => Promise.all(connections.map(async connection => {
+        await connection.driver.createSchemaBuilder().build();
+        const queryRunner = connection.createQueryRunner();
+
+        // ManyToOne
+        const table = await queryRunner.getTable("access_event");
+        const column = table!.findColumnByName("employeeProvider");
+        expect(column!.enum).to.deep.equal([ "msGraph", "atlassian" ]);
+
+        // ManyToMany
+        const table2 = await queryRunner.getTable("access_event_employees_employee");
+        const column2 = table2!.findColumnByName("employeeProvider");
+        expect(column2!.enum).to.deep.equal([ "msGraph", "atlassian" ]);
+
+        await queryRunner.release();
+    })));
+});
diff --git a/test/github-issues/7401/issue-7401.ts b/test/github-issues/7401/issue-7401.ts
new file mode 100644
index 0000000000..45583509bb
--- /dev/null
+++ b/test/github-issues/7401/issue-7401.ts
@@ -0,0 +1,18 @@
+import "reflect-metadata";
+import { DriverUtils } from "../../../src/driver/DriverUtils"
+import { expect } from "chai";
+
+describe("github issues > #7401 MongoDB replica set connection string not support with method \"parseConnectionUrl\" & \"buildConnectionUrl\"", () => {
+
+    it("should parse replicaSet and host list in ConnectionUrl", () => {
+
+       var options = DriverUtils.buildMongoDBDriverOptions({url: "mongodb://testuser:testpwd@test-primary.example.com:27017,test-secondary-1.example.com:27017,test-secondary-2.example.com:27017/testdb?replicaSet=testreplicaset"})
+
+       expect((options.hostReplicaSet ? options.hostReplicaSet as string : '')).to.equal('test-primary.example.com:27017,test-secondary-1.example.com:27017,test-secondary-2.example.com:27017');
+       expect((options.username ? options.username as string : '')).to.equal('testuser');
+       expect((options.password ? options.password as string : '')).to.equal('testpwd');
+       expect((options.database ? options.database as string : '')).to.equal('testdb');
+       expect((options.replicaSet ? options.replicaSet as string : '')).to.equal('testreplicaset');
+    });
+
+});
\ No newline at end of file
diff --git a/test/github-issues/7415/entity/Category.ts b/test/github-issues/7415/entity/Category.ts
new file mode 100644
index 0000000000..a40abf59e0
--- /dev/null
+++ b/test/github-issues/7415/entity/Category.ts
@@ -0,0 +1,26 @@
+import {
+    Column,
+    Entity,
+    Tree,
+    TreeChildren,
+    TreeParent,
+} from "../../../../src";
+import { Slug } from "./Slug";
+
+@Entity()
+@Tree("materialized-path")
+export class Category {
+    @Column((type) => Slug, { prefix: false })
+    id: Slug;
+
+    @TreeChildren()
+    children: Category[];
+
+    @TreeParent()
+    parent: Category;
+
+    constructor(slug: string, parent?: Category) {
+        this.id = new Slug(slug);
+        if (parent) this.parent = parent;
+    }
+}
diff --git a/test/github-issues/7415/entity/Slug.ts b/test/github-issues/7415/entity/Slug.ts
new file mode 100644
index 0000000000..d79ab69f4a
--- /dev/null
+++ b/test/github-issues/7415/entity/Slug.ts
@@ -0,0 +1,10 @@
+import { PrimaryColumn } from "../../../../src";
+
+export class Slug {
+    @PrimaryColumn()
+    slug: string;
+
+    constructor(slug: string) {
+        this.slug = slug;
+    }
+}
diff --git a/test/github-issues/7415/issue-7415.ts b/test/github-issues/7415/issue-7415.ts
new file mode 100644
index 0000000000..2e8e25c390
--- /dev/null
+++ b/test/github-issues/7415/issue-7415.ts
@@ -0,0 +1,87 @@
+import "reflect-metadata";
+import {
+    createTestingConnections,
+    closeTestingConnections,
+    reloadTestingDatabases,
+} from "../../utils/test-utils";
+import { Connection } from "../../../src/connection/Connection";
+import { Category } from "./entity/Category";
+import { Slug } from "./entity/Slug";
+import { expect } from "chai";
+
+describe("github issues > #7415 Tree entities with embedded primary columns are not built correctly", () => {
+    let connections: Connection[];
+    before(
+        async () =>
+            (connections = await createTestingConnections({
+                entities: [__dirname + "/entity/*{.js,.ts}"],
+                schemaCreate: true,
+                dropSchema: true,
+            }))
+    );
+    beforeEach(() => reloadTestingDatabases(connections));
+    after(() => closeTestingConnections(connections));
+
+    it("should build tree entities with embedded primary columns correctly", () =>
+        Promise.all(
+            connections.map(async (connection) => {
+                const manager = connection.manager;
+
+                const a1 = new Category("1");
+                await manager.save(a1);
+
+                const a2 = new Category("2");
+                await manager.save(a2);
+
+                const a11 = new Category("1.1", a1);
+                await manager.save(a11);
+
+                const a12 = new Category("1.2", a1);
+                await manager.save(a12);
+
+                const a13 = new Category("1.3", a1);
+                await manager.save(a13);
+
+                const a121 = new Category("1.2.1", a12);
+                await manager.save(a121);
+
+                const a122 = new Category("1.2.2", a12);
+                await manager.save(a122);
+
+                const repository = manager.getTreeRepository(Category);
+
+                const descendantsTree = await repository.findDescendantsTree(
+                    a1
+                );
+
+                const expectedDescendantsTree = {
+                    id: new Slug("1"),
+                    children: [
+                        { id: new Slug("1.1"), children: [] },
+                        {
+                            id: new Slug("1.2"),
+                            children: [
+                                { id: new Slug("1.2.1"), children: [] },
+                                { id: new Slug("1.2.2"), children: [] },
+                            ],
+                        },
+                        { id: new Slug("1.3"), children: [] },
+                    ],
+                };
+
+                expect(descendantsTree).to.be.eql(expectedDescendantsTree);
+
+                const ancestorsTree = await repository.findAncestorsTree(a121);
+
+                const expectedAncestorsTree = {
+                    id: new Slug("1.2.1"),
+                    parent: {
+                        id: new Slug("1.2"),
+                        parent: { id: new Slug("1") },
+                    },
+                };
+
+                expect(ancestorsTree).to.be.eql(expectedAncestorsTree);
+            })
+        ));
+});
diff --git a/test/github-issues/7437/issue-7437.ts b/test/github-issues/7437/issue-7437.ts
new file mode 100644
index 0000000000..64eab8e4fa
--- /dev/null
+++ b/test/github-issues/7437/issue-7437.ts
@@ -0,0 +1,22 @@
+import "reflect-metadata";
+import { DriverUtils } from "../../../src/driver/DriverUtils"
+import { expect } from "chai";
+
+describe("github issues > #7437 MongoDB options never parse in connectionUrl and after my fix was parse incorrect", () => {
+
+    it("should parse options in ConnectionUrl", () => {
+
+       var options = DriverUtils.buildMongoDBDriverOptions({url: "mongodb://testuser:testpwd@test-primary.example.com:27017/testdb?retryWrites=true&w=majority&useUnifiedTopology=true"})
+
+       expect((options.host ? options.host as string : '')).to.equal('test-primary.example.com');
+       expect((options.username ? options.username as string : '')).to.equal('testuser');
+       expect((options.password ? options.password as string : '')).to.equal('testpwd');
+       expect((options.port ? options.port as number : 0)).to.equal(27017);
+       expect((options.database ? options.database as string : '')).to.equal('testdb');
+
+       expect((options.retryWrites ? options.retryWrites as string : '')).to.equal('true');
+       expect((options.w ? options.w as string : '')).to.equal('majority');
+       expect((options.useUnifiedTopology ? options.useUnifiedTopology as string : '')).to.equal('true');
+    });
+
+});
\ No newline at end of file
diff --git a/test/integration/sample2-one-to-one.ts b/test/integration/sample2-one-to-one.ts
index 303d6de028..29d3cb00cd 100644
--- a/test/integration/sample2-one-to-one.ts
+++ b/test/integration/sample2-one-to-one.ts
@@ -64,7 +64,7 @@ describe("one-to-one", function() {
             return;
 
         let newPost: Post, details: PostDetails, savedPost: Post;
-        
+
         before(reloadDatabase);
 
         before(function() {
@@ -72,7 +72,7 @@ describe("one-to-one", function() {
             details.authorName = "Umed";
             details.comment = "this is post";
             details.metadata = "post,posting,postman";
-            
+
             newPost = new Post();
             newPost.text = "Hello post";
             newPost.title = "this is post title";
@@ -85,12 +85,12 @@ describe("one-to-one", function() {
         });
 
         it("should return the same post details instance after its created", function () {
-            savedPost.details.should.be.equal(newPost.details);
+            savedPost.details!.should.be.equal(newPost.details);
         });
 
         it("should have a new generated id after post is created", function () {
             expect(savedPost.id).not.to.be.undefined;
-            expect(savedPost.details.id).not.to.be.undefined;
+            expect(savedPost.details!.id).not.to.be.undefined;
         });
 
         it("should have inserted post in the database", function() {
@@ -100,7 +100,7 @@ describe("one-to-one", function() {
             expectedPost.id = savedPost.id;
             expectedPost.text = savedPost.text;
             expectedPost.title = savedPost.title;
-            
+
             return postRepository.findOne(savedPost.id).should.eventually.eql(expectedPost);
         });
 
@@ -108,12 +108,12 @@ describe("one-to-one", function() {
             if (!connection)
                 return;
             const expectedDetails = new PostDetails();
-            expectedDetails.id = savedPost.details.id;
-            expectedDetails.authorName = savedPost.details.authorName;
-            expectedDetails.comment = savedPost.details.comment;
-            expectedDetails.metadata = savedPost.details.metadata;
+            expectedDetails.id = savedPost.details!.id;
+            expectedDetails.authorName = savedPost.details!.authorName;
+            expectedDetails.comment = savedPost.details!.comment;
+            expectedDetails.metadata = savedPost.details!.metadata;
 
-            const loadedPostDetails = await postDetailsRepository.findOne(savedPost.details.id);
+            const loadedPostDetails = await postDetailsRepository.findOne(savedPost.details!.id);
             loadedPostDetails!.should.be.eql(expectedDetails);
         });
 
@@ -125,11 +125,11 @@ describe("one-to-one", function() {
             expectedPost.text = savedPost.text;
             expectedPost.title = savedPost.title;
             expectedPost.details = new PostDetails();
-            expectedPost.details.id = savedPost.details.id;
-            expectedPost.details.authorName = savedPost.details.authorName;
-            expectedPost.details.comment = savedPost.details.comment;
-            expectedPost.details.metadata = savedPost.details.metadata;
-            
+            expectedPost.details!.id = savedPost.details!.id;
+            expectedPost.details!.authorName = savedPost.details!.authorName;
+            expectedPost.details!.comment = savedPost.details!.comment;
+            expectedPost.details!.metadata = savedPost.details!.metadata;
+
             const post = await postRepository
                 .createQueryBuilder("post")
                 .leftJoinAndSelect("post.details", "details")
@@ -146,16 +146,16 @@ describe("one-to-one", function() {
                 return;
 
             const expectedDetails = new PostDetails();
-            expectedDetails.id = savedPost.details.id;
-            expectedDetails.authorName = savedPost.details.authorName;
-            expectedDetails.comment = savedPost.details.comment;
-            expectedDetails.metadata = savedPost.details.metadata;
+            expectedDetails.id = savedPost.details!.id;
+            expectedDetails.authorName = savedPost.details!.authorName;
+            expectedDetails.comment = savedPost.details!.comment;
+            expectedDetails.metadata = savedPost.details!.metadata;
 
             expectedDetails.post = new Post();
             expectedDetails.post.id = savedPost.id;
             expectedDetails.post.text = savedPost.text;
             expectedDetails.post.title = savedPost.title;
-            
+
             return postDetailsRepository
                 .createQueryBuilder("details")
                 .leftJoinAndSelect("details.post", "post")
@@ -170,7 +170,7 @@ describe("one-to-one", function() {
             expectedPost.id = savedPost.id;
             expectedPost.text = savedPost.text;
             expectedPost.title = savedPost.title;
-            
+
             return postRepository
                 .createQueryBuilder("post")
                 .where("post.id=:id", { id: savedPost.id })
@@ -180,11 +180,11 @@ describe("one-to-one", function() {
 
         it("should load saved post without details if left joins are not specified", function() {
             const expectedDetails = new PostDetails();
-            expectedDetails.id = savedPost.details.id;
-            expectedDetails.authorName = savedPost.details.authorName;
-            expectedDetails.comment = savedPost.details.comment;
-            expectedDetails.metadata = savedPost.details.metadata;
-            
+            expectedDetails.id = savedPost.details!.id;
+            expectedDetails.authorName = savedPost.details!.authorName;
+            expectedDetails.comment = savedPost.details!.comment;
+            expectedDetails.metadata = savedPost.details!.metadata;
+
             return postDetailsRepository
                 .createQueryBuilder("details")
                 .where("details.id=:id", { id: savedPost.id })
@@ -268,7 +268,7 @@ describe("one-to-one", function() {
                 .getSingleResult()
                 .should.be.rejectedWith(Error);*/ // not working, find fix
         });
-        
+
     });
 
     describe("cascade updates should not be executed when cascadeUpdate option is not set", function() {
@@ -294,7 +294,7 @@ describe("one-to-one", function() {
         });
 
         it("should ignore updates in the model and do not update the db when entity is updated", function () {
-            newPost.details.comment = "i am updated comment";
+            newPost.details!.comment = "i am updated comment";
             return postRepository.save(newPost).then(updatedPost => {
                 updatedPost.details!.comment!.should.be.equal("i am updated comment");
                 return postRepository
@@ -304,7 +304,7 @@ describe("one-to-one", function() {
                     .setParameter("id", updatedPost.id)
                     .getOne();
             }).then(updatedPostReloaded => {
-                updatedPostReloaded!.details.comment.should.be.equal("this is post");
+                updatedPostReloaded!.details!.comment.should.be.equal("this is post");
             });
         }); // todo: also check that updates throw exception in strict cascades mode
     });
@@ -343,7 +343,7 @@ describe("one-to-one", function() {
                     .setParameter("id", updatedPost.id)
                     .getOne();
             }).then(updatedPostReloaded => {
-                updatedPostReloaded!.details.comment.should.be.equal("this is post");
+                updatedPostReloaded!.details!.comment.should.be.equal("this is post");
             });
         });
     });
@@ -391,7 +391,7 @@ describe("one-to-one", function() {
                         .where("post.id=:id")
                         .setParameter("id", newPost.id)
                         .getOne();
-                    
+
                 }).then(reloadedPost => {
                     reloadedPost!.image.url.should.be.equal("new-logo.png");
                 });
diff --git a/test/integration/sample3-many-to-one.ts b/test/integration/sample3-many-to-one.ts
index e8c96d6b33..3c83681971 100644
--- a/test/integration/sample3-many-to-one.ts
+++ b/test/integration/sample3-many-to-one.ts
@@ -62,7 +62,7 @@ describe("many-to-one", function() {
         if (!connection)
             return;
         let newPost: Post, details: PostDetails, savedPost: Post;
-        
+
         before(reloadDatabase);
 
         before(function() {
@@ -70,7 +70,7 @@ describe("many-to-one", function() {
             details.authorName = "Umed";
             details.comment = "this is post";
             details.metadata = "post,posting,postman";
-            
+
             newPost = new Post();
             newPost.text = "Hello post";
             newPost.title = "this is post title";
@@ -83,12 +83,12 @@ describe("many-to-one", function() {
         });
 
         it("should return the same post details instance after its created", function () {
-            savedPost.details.should.be.equal(newPost.details);
+            savedPost.details!.should.be.equal(newPost.details);
         });
 
         it("should have a new generated id after post is created", function () {
             expect(savedPost.id).not.to.be.undefined;
-            expect(savedPost.details.id).not.to.be.undefined;
+            expect(savedPost.details!.id).not.to.be.undefined;
         });
 
         it("should have inserted post in the database", function() {
@@ -98,7 +98,7 @@ describe("many-to-one", function() {
             expectedPost.id = savedPost.id;
             expectedPost.text = savedPost.text;
             expectedPost.title = savedPost.title;
-            
+
             return postRepository.findOne(savedPost.id).should.eventually.eql(expectedPost);
         });
 
@@ -106,12 +106,12 @@ describe("many-to-one", function() {
             if (!connection)
                 return;
             const expectedDetails = new PostDetails();
-            expectedDetails.id = savedPost.details.id;
-            expectedDetails.authorName = savedPost.details.authorName;
-            expectedDetails.comment = savedPost.details.comment;
-            expectedDetails.metadata = savedPost.details.metadata;
-            
-            return postDetailsRepository.findOne(savedPost.details.id).should.eventually.eql(expectedDetails);
+            expectedDetails.id = savedPost.details!.id;
+            expectedDetails.authorName = savedPost.details!.authorName;
+            expectedDetails.comment = savedPost.details!.comment;
+            expectedDetails.metadata = savedPost.details!.metadata;
+
+            return postDetailsRepository.findOne(savedPost.details!.id).should.eventually.eql(expectedDetails);
         });
 
         it("should load post and its details if left join used", function() {
@@ -122,11 +122,11 @@ describe("many-to-one", function() {
             expectedPost.text = savedPost.text;
             expectedPost.title = savedPost.title;
             expectedPost.details = new PostDetails();
-            expectedPost.details.id = savedPost.details.id;
-            expectedPost.details.authorName = savedPost.details.authorName;
-            expectedPost.details.comment = savedPost.details.comment;
-            expectedPost.details.metadata = savedPost.details.metadata;
-            
+            expectedPost.details.id = savedPost.details!.id;
+            expectedPost.details.authorName = savedPost.details!.authorName;
+            expectedPost.details.comment = savedPost.details!.comment;
+            expectedPost.details.metadata = savedPost.details!.metadata;
+
             return postRepository
                 .createQueryBuilder("post")
                 .leftJoinAndSelect("post.details", "details")
@@ -141,19 +141,19 @@ describe("many-to-one", function() {
                 return;
 
             const expectedDetails = new PostDetails();
-            expectedDetails.id = savedPost.details.id;
-            expectedDetails.authorName = savedPost.details.authorName;
-            expectedDetails.comment = savedPost.details.comment;
-            expectedDetails.metadata = savedPost.details.metadata;
+            expectedDetails.id = savedPost.details!.id;
+            expectedDetails.authorName = savedPost.details!.authorName;
+            expectedDetails.comment = savedPost.details!.comment;
+            expectedDetails.metadata = savedPost.details!.metadata;
 
             const expectedPost = new Post();
             expectedPost.id = savedPost.id;
             expectedPost.text = savedPost.text;
             expectedPost.title = savedPost.title;
-            
+
             expectedDetails.posts = [];
             expectedDetails.posts.push(expectedPost);
-            
+
             return postDetailsRepository
                 .createQueryBuilder("details")
                 .leftJoinAndSelect("details.posts", "posts")
@@ -170,7 +170,7 @@ describe("many-to-one", function() {
             expectedPost.id = savedPost.id;
             expectedPost.text = savedPost.text;
             expectedPost.title = savedPost.title;
-            
+
             return postRepository
                 .createQueryBuilder("post")
                 .where("post.id=:id", { id: savedPost.id })
@@ -182,11 +182,11 @@ describe("many-to-one", function() {
             if (!connection)
                 return;
             const expectedDetails = new PostDetails();
-            expectedDetails.id = savedPost.details.id;
-            expectedDetails.authorName = savedPost.details.authorName;
-            expectedDetails.comment = savedPost.details.comment;
-            expectedDetails.metadata = savedPost.details.metadata;
-            
+            expectedDetails.id = savedPost.details!.id;
+            expectedDetails.authorName = savedPost.details!.authorName;
+            expectedDetails.comment = savedPost.details!.comment;
+            expectedDetails.metadata = savedPost.details!.metadata;
+
             return postDetailsRepository
                 .createQueryBuilder("details")
                 .where("details.id=:id", { id: savedPost.id })
@@ -275,7 +275,7 @@ describe("many-to-one", function() {
                 .getSingleResult()
                 .should.be.rejectedWith(Error);*/ // not working, find fix
         });
-        
+
     });
 
     describe("cascade updates should not be executed when cascadeUpdate option is not set", function() {
@@ -301,7 +301,7 @@ describe("many-to-one", function() {
         });
 
         it("should ignore updates in the model and do not update the db when entity is updated", function () {
-            newPost.details.comment = "i am updated comment";
+            newPost.details!.comment = "i am updated comment";
             return postRepository.save(newPost).then(updatedPost => {
                 updatedPost.details!.comment!.should.be.equal("i am updated comment");
                 return postRepository
@@ -311,7 +311,7 @@ describe("many-to-one", function() {
                     .setParameter("id", updatedPost.id)
                     .getOne();
             }).then(updatedPostReloaded => {
-                updatedPostReloaded!.details.comment!.should.be.equal("this is post");
+                updatedPostReloaded!.details!.comment!.should.be.equal("this is post");
             });
         }); // todo: also check that updates throw exception in strict cascades mode
     });
@@ -348,7 +348,7 @@ describe("many-to-one", function() {
                     .setParameter("id", updatedPost.id)
                     .getOne();
             }).then(updatedPostReloaded => {
-                updatedPostReloaded!.details.comment!.should.be.equal("this is post");
+                updatedPostReloaded!.details!.comment!.should.be.equal("this is post");
             });
         });
     });
@@ -395,7 +395,7 @@ describe("many-to-one", function() {
                         .where("post.id=:id")
                         .setParameter("id", newPost.id)
                         .getOne();
-                    
+
                 }).then(reloadedPost => {
                     reloadedPost!.image.url.should.be.equal("new-logo.png");
                 });
diff --git a/test/other-issues/table-name-relation/entity/Category.ts b/test/other-issues/table-name-relation/entity/Category.ts
new file mode 100644
index 0000000000..efc5ee2e8a
--- /dev/null
+++ b/test/other-issues/table-name-relation/entity/Category.ts
@@ -0,0 +1,12 @@
+import {Entity, PrimaryGeneratedColumn, Column} from "../../../../src";
+
+@Entity("categories")
+export class Category {
+
+    @PrimaryGeneratedColumn()
+    id: number;
+
+    @Column()
+    name: string;
+
+}
diff --git a/test/other-issues/table-name-relation/entity/Photo.ts b/test/other-issues/table-name-relation/entity/Photo.ts
new file mode 100644
index 0000000000..8c360ea51f
--- /dev/null
+++ b/test/other-issues/table-name-relation/entity/Photo.ts
@@ -0,0 +1,16 @@
+import {Entity, PrimaryGeneratedColumn, Column, ManyToOne} from "../../../../src";
+import {User} from "./User";
+
+@Entity("photographs")
+export class Photo {
+
+    @PrimaryGeneratedColumn()
+    id: number;
+
+    @Column()
+    url: string;
+
+    @ManyToOne("users", "photos")
+    user: User;
+
+}
diff --git a/test/other-issues/table-name-relation/entity/Profile.ts b/test/other-issues/table-name-relation/entity/Profile.ts
new file mode 100644
index 0000000000..6b2871a59d
--- /dev/null
+++ b/test/other-issues/table-name-relation/entity/Profile.ts
@@ -0,0 +1,15 @@
+import {Entity, PrimaryGeneratedColumn, Column} from "../../../../src";
+
+@Entity("profiles")
+export class Profile {
+
+    @PrimaryGeneratedColumn()
+    id: number;
+
+    @Column()
+    gender: string;
+
+    @Column()
+    photo: string;
+
+}
diff --git a/test/other-issues/table-name-relation/entity/Question.ts b/test/other-issues/table-name-relation/entity/Question.ts
new file mode 100644
index 0000000000..cc8f24c00e
--- /dev/null
+++ b/test/other-issues/table-name-relation/entity/Question.ts
@@ -0,0 +1,18 @@
+import {Entity, PrimaryGeneratedColumn, ManyToMany, JoinTable} from "../../../../src";
+import {Column} from "../../../../src/decorator/columns/Column";
+import {Category} from "./Category";
+
+@Entity("questions")
+export class Question {
+
+    @PrimaryGeneratedColumn()
+    id: number;
+
+    @Column()
+    name: string;
+
+    @ManyToMany("categories")
+    @JoinTable()
+    categories: Category[];
+
+}
diff --git a/test/other-issues/table-name-relation/entity/User.ts b/test/other-issues/table-name-relation/entity/User.ts
new file mode 100644
index 0000000000..e601e4a2c5
--- /dev/null
+++ b/test/other-issues/table-name-relation/entity/User.ts
@@ -0,0 +1,21 @@
+import {Entity, PrimaryGeneratedColumn, Column, OneToMany, OneToOne, JoinColumn} from "../../../../src";
+import {Photo} from "./Photo";
+import {Profile} from "./Profile";
+
+@Entity("users")
+export class User {
+
+    @PrimaryGeneratedColumn()
+    id: number;
+
+    @Column()
+    name: string;
+
+    @OneToMany("photographs", "user")
+    photos: Photo[];
+
+    @OneToOne("profiles")
+    @JoinColumn()
+    profile: Profile;
+
+}
diff --git a/test/other-issues/table-name-relation/table-name-relation.ts b/test/other-issues/table-name-relation/table-name-relation.ts
new file mode 100644
index 0000000000..af3c16cfd8
--- /dev/null
+++ b/test/other-issues/table-name-relation/table-name-relation.ts
@@ -0,0 +1,130 @@
+import "reflect-metadata";
+import {createTestingConnections, closeTestingConnections, reloadTestingDatabases} from "../../utils/test-utils";
+import {Connection} from "../../../src/connection/Connection";
+
+import {Photo} from "./entity/Photo";
+import {User} from "./entity/User";
+import {Profile} from "./entity/Profile";
+import {Category} from "./entity/Category";
+import {Question} from "./entity/Question";
+
+describe("other issues > Relation decorators: allow to pass given table name string instead of typeFunction or entity name", () => {
+
+    let connections: Connection[];
+    before(async () => connections = await createTestingConnections({
+        entities: [__dirname + "/entity/*{.js,.ts}"],
+        schemaCreate: true,
+        dropSchema: true,
+    }));
+    beforeEach(() => reloadTestingDatabases(connections));
+    after(() => closeTestingConnections(connections));
+
+    it("should work with one-to-one relations", () => Promise.all(connections.map(async connection => {
+
+        const profile = new Profile();
+        profile.gender = "male";
+        profile.photo = "me.jpg";
+        await connection.manager.save(profile);
+
+        const user = new User();
+        user.name = "Joe Smith";
+        user.profile = profile;
+        await connection.manager.save(user);
+
+        const users = await connection.manager.find(User, { relations: ["profile"] });
+
+        users.should.eql([{
+            id: 1,
+            name: "Joe Smith",
+            profile: {
+                id: 1,
+                gender: "male",
+                photo: "me.jpg"
+            }
+        }]);
+
+    })));
+
+    it("should work with many-to-one/one-to-many relations", () => Promise.all(connections.map(async connection => {
+
+        const photo1 = new Photo();
+        photo1.url = "me.jpg";
+        await connection.manager.save(photo1);
+
+        const photo2 = new Photo();
+        photo2.url = "me-and-bears.jpg";
+        await connection.manager.save(photo2);
+
+        const user = new User();
+        user.name = "John";
+        user.photos = [photo1, photo2];
+        await connection.manager.save(user);
+
+        const users = await connection.manager.find(User, { relations: ["photos"] });
+        const photos = await connection.manager.find(Photo, { relations: ["user"] });
+
+        // Check one-to-many
+        users[0].photos.should.have.deep.members([
+            {
+                id: 1,
+                url: "me.jpg"
+            },
+            {
+                id: 2,
+                url: "me-and-bears.jpg"
+            }
+        ]);
+
+        // Check many-to-one
+        photos.should.have.deep.members([
+            {
+                id: 1,
+                url: "me.jpg",
+                user: {
+                    id: 1,
+                    name: "John"
+                }
+            },
+            {
+                id: 2,
+                url: "me-and-bears.jpg",
+                user: {
+                    id: 1,
+                    name: "John"
+                }
+            }
+        ]);
+
+    })));
+
+    it("should work with many-to-many relations", () => Promise.all(connections.map(async connection => {
+
+        const category1 = new Category();
+        category1.name = "animals";
+        await connection.manager.save(category1);
+
+        const category2 = new Category();
+        category2.name = "zoo";
+        await connection.manager.save(category2);
+
+        const question = new Question();
+        question.name = "About animals";
+        question.categories = [category1, category2];
+        await connection.manager.save(question);
+
+        const questions = await connection.manager.find(Question, { relations: ["categories"] });
+
+        questions[0].categories.should.have.deep.members([
+            {
+                id: 1,
+                name: "animals"
+            },
+            {
+                id: 2,
+                name: "zoo"
+            }
+        ]);
+
+    })));
+
+});