diff --git a/packages/example/sql/schema.sql b/packages/example/sql/schema.sql
index ddfa9ceb..96ba87e7 100644
--- a/packages/example/sql/schema.sql
+++ b/packages/example/sql/schema.sql
@@ -1,3 +1,4 @@
+BEGIN;
 CREATE TABLE users (
   id SERIAL PRIMARY KEY,
   email TEXT NOT NULL,
@@ -35,6 +36,12 @@ CREATE TABLE books (
   categories category[]
 );
 
+CREATE TABLE audio_books (
+                             id SERIAL PRIMARY KEY,
+                             text_book_id INTEGER REFERENCES books,
+                             duration INTERVAL NOT NULL
+);
+
 CREATE TABLE book_comments (
   id SERIAL PRIMARY KEY,
   user_id INTEGER REFERENCES users,
@@ -42,6 +49,8 @@ CREATE TABLE book_comments (
   body TEXT
 );
 
+
+
 INSERT INTO users (email, user_name, first_name, last_name, age)
 VALUES ('alex.doe@example.com', 'alexd', 'Alex', 'Doe', 35),
        ('jane.holmes@example.com', 'jane67', 'Jane', 'Holmes', 23),
@@ -78,6 +87,12 @@ INSERT INTO book_comments (user_id, book_id, body)
 VALUES (1, 1, 'Fantastic read, recommend it!'),
        (1, 2, 'Did not like it, expected much more...');
 
+INSERT INTO audio_books (text_book_id, duration)
+VALUES (1, '01:23:45'),
+       (2, '02:34:56'),
+       (3, '03:45:57'),
+       (4, '04:56:48');
+
 CREATE TYPE "Iso31661Alpha2" AS ENUM (
   'AD', 'AE', 'AF', 'AG', 'AI', 'AL', 'AM', 'AO', 'AQ', 'AR', 'AS', 'AT', 'AU', 'AW', 'AX', 'AZ', 'BA', 'BB', 'BD', 'BE', 'BF',
   'BG', 'BH', 'BI', 'BJ', 'BL', 'BM', 'BN', 'BO', 'BQ', 'BR', 'BS', 'BT', 'BV', 'BW', 'BY', 'BZ', 'CA', 'CC', 'CD', 'CF', 'CG',
@@ -101,3 +116,5 @@ CREATE TABLE book_country (
 
 INSERT INTO book_country (country)
 VALUES ('CZ'), ('DE');
+
+COMMIT;
\ No newline at end of file
diff --git a/packages/example/src/__snapshots__/index.test.ts.snap b/packages/example/src/__snapshots__/index.test.ts.snap
index f98c6f6d..c5d8a3f4 100644
--- a/packages/example/src/__snapshots__/index.test.ts.snap
+++ b/packages/example/src/__snapshots__/index.test.ts.snap
@@ -47,6 +47,31 @@ Array [
 ]
 `;
 
+exports[`select query with interval field 1`] = `
+Array [
+  Object {
+    "duration": "0 years 0 mons 0 days 1 hours 23 mins 45.0 secs",
+    "id": 1,
+    "text_book_id": 1,
+  },
+  Object {
+    "duration": "0 years 0 mons 0 days 2 hours 34 mins 56.0 secs",
+    "id": 2,
+    "text_book_id": 2,
+  },
+  Object {
+    "duration": "0 years 0 mons 0 days 3 hours 45 mins 57.0 secs",
+    "id": 3,
+    "text_book_id": 3,
+  },
+  Object {
+    "duration": "0 years 0 mons 0 days 4 hours 56 mins 48.0 secs",
+    "id": 4,
+    "text_book_id": 4,
+  },
+]
+`;
+
 exports[`select query with join and a parameter override 1`] = `
 Array [
   Object {
diff --git a/packages/example/src/audio_books/audio_books.queries.ts b/packages/example/src/audio_books/audio_books.queries.ts
new file mode 100644
index 00000000..2424b5e7
--- /dev/null
+++ b/packages/example/src/audio_books/audio_books.queries.ts
@@ -0,0 +1,30 @@
+/** Types generated for queries found in "src/audio_books/audio_books.sql" */
+import { PreparedQuery } from '@pgtyped/runtime';
+
+/** 'GetAudioBooks' parameters type */
+export type IGetAudioBooksParams = void;
+
+/** 'GetAudioBooks' return type */
+export interface IGetAudioBooksResult {
+  duration: string;
+  id: number;
+  text_book_id: number | null;
+}
+
+/** 'GetAudioBooks' query type */
+export interface IGetAudioBooksQuery {
+  params: IGetAudioBooksParams;
+  result: IGetAudioBooksResult;
+}
+
+const getAudioBooksIR: any = {"usedParamSet":{},"params":[],"statement":"select * from audio_books"};
+
+/**
+ * Query generated from SQL:
+ * ```
+ * select * from audio_books
+ * ```
+ */
+export const getAudioBooks = new PreparedQuery<IGetAudioBooksParams,IGetAudioBooksResult>(getAudioBooksIR);
+
+
diff --git a/packages/example/src/audio_books/audio_books.sql b/packages/example/src/audio_books/audio_books.sql
new file mode 100644
index 00000000..b98bdb55
--- /dev/null
+++ b/packages/example/src/audio_books/audio_books.sql
@@ -0,0 +1,2 @@
+/* @name getAudioBooks */
+select * from audio_books;
\ No newline at end of file
diff --git a/packages/example/src/index.test.ts b/packages/example/src/index.test.ts
index dd6629cd..01a5b6de 100644
--- a/packages/example/src/index.test.ts
+++ b/packages/example/src/index.test.ts
@@ -30,6 +30,7 @@ import {
 import { getUsersWithComment } from './users/sample.js';
 import { Category } from './customTypes.js';
 import { sql } from './sql/index.js'
+import { getAudioBooks } from "./audio_books/audio_books.queries.js";
 
 const { Client } = pg;
 
@@ -232,7 +233,10 @@ test('select query with a bigint field', async () => {
   expect(row.book_count).toBe(BigInt(4));
 });
 
-
+test('select query with interval field', async () => {
+  const rows = await getAudioBooks.run(undefined, client);
+  expect(rows).toMatchSnapshot();
+})
 test('ts-implicit mode query', async () => {
   const books = await sql(`SELECT * FROM books WHERE id = $id`).run({id: 1}, client);
   expect(books).toMatchSnapshot();