npm migration package for mysql, mariadb
- Installation
- Setup
- FOR ES6
- FOR CommonJs
- Update package.json
- Table Migration
- create migration
- code sample for table migration file
- run migration file
- up
- rollback
- Data Seeding
- create seeding
- code sample for data seeding file
- run seeding file
- up
- rollback
npm install mysql-migrator
create migrator.js with the following code.
import { Migrator, Output } from 'mysql-migrator'
import path from 'path'
import { fileURLToPath } from 'url'
const __filename = fileURLToPath(import.meta.url)
const __dirname = path.dirname(__filename)
const dbConfig = {
host: 'localhost',
user: 'your-user-name',
port: 3306,
password: 'your-password',
database: 'your-database'
}
const migrationsPath = __dirname + '/migrations'
const migrator = new Migrator(dbConfig, migrationsPath)
const result = await migrator.init()
Output(result)
process.exit()
const { Migrator, Output } = require('mysql-migrator')
const dbConfig = {
host: 'localhost',
user: 'your-user-name',
port: 3306,
password: 'your-password',
database: 'your-database'
}
const migrationsPath = __dirname + '/migrations'
const migrator = new Migrator(dbConfig, migrationsPath)
const result = await migrator.init()
Output(result)
process.exit()
...
"scripts": {
...
"migrate": "node migrator.js"
},
...
node migrator.js migration:create create_table_user
or
npm run migrate migration:create create_table_user
there are two function up and rollback functions.
- up is for upgrading
- rollback is for downgrading. to use this function when you need to roll back to previous batch.
//write sql statement to create or modify
module.exports = {
up: async (tbl) => {
return await tbl.create('tblUser', {
id: 'int NOT NULL PRIMARY KEY AUTO_INCREMENT',
name: 'varchar(254) NOT NULL'
})
},
rollback: async (tbl) => {
return await tbl.dropTable('tblUser')
}
}
node migrator.js migration:up
or
npm run migrate migration:up
node migrator.js migration:rollback
or
npm run migrate migration:rollback
node migrator.js seeding:create user_data_seeding
or
npm run migrate seeding:create user_data_seeding
there are two function up and rollback functions.
- up is for upgrading
- rollback is for downgrading. to use this function when you need to roll back to previous batch.
//write sql statement to create or modify
module.exports = {
up: async (_query) => {
const queryString = 'INSERT INTO tblUser VALUES(1,"hello")'
await _query(queryString)
},
rollback: async (_query) => {
const queryString = 'TRUNCATE TABLE tblUser'
await _query(queryString)
}
}
node migrator.js seeding:up
or
npm run migrate seeding:up
node migrator.js seeding:rollback
or
npm run migrate seeding:rollback
Thank You for Visiting to my repo. :)