roccho Posts - Answer Overflow

roccho

•Created by roccho on 12/23/2023 in #help

Test CloufFlare D1 migration

https://orm.drizzle.team/docs/migrations

import { drizzle } from 'drizzle-orm/mysql2';
import mysql from 'mysql2/promise';
import * as schema from './schema';

export const connection = mysql.createConnection({
  host: process.env.DB_HOST,
  user: process.env.DB_USER,
  password: process.env.DB_PASSWORD,
  database: process.env.DB_NAME,
  multipleStatements: true,
});

export const db = drizzle(connection, { schema });

import 'dotenv/config';
import { migrate } from 'drizzle-orm/mysql2/migrator';
import { db, connection } from './db';

// This will run migrations on the database, skipping the ones already applied
await migrate(db, { migrationsFolder: './drizzle' });

// Don't forget to close the connection, otherwise the script will hang
await connection.end();

import { drizzle } from 'drizzle-orm/mysql2';
import mysql from 'mysql2/promise';
import * as schema from './schema';

export const connection = mysql.createConnection({
  host: process.env.DB_HOST,
  user: process.env.DB_USER,
  password: process.env.DB_PASSWORD,
  database: process.env.DB_NAME,
  multipleStatements: true,
});

export const db = drizzle(connection, { schema });

import 'dotenv/config';
import { migrate } from 'drizzle-orm/mysql2/migrator';
import { db, connection } from './db';

// This will run migrations on the database, skipping the ones already applied
await migrate(db, { migrationsFolder: './drizzle' });

// Don't forget to close the connection, otherwise the script will hang
await connection.end();

This is a great example of migrating to a mysql instance that can connect to any local remote instance. It is complete in Typescript and can be unit tested! I would like to do the same with D1 I could not find any documentation, is it possible? Or should I test by substituting a sqlite instance or an in-memory database?

3 replies

DTDrizzle Team

•Created by roccho on 11/23/2023 in #help

In memory feature, drissle has?

import { drizzle } from 'drizzle-orm/better-sqlite3';
import Database from 'better-sqlite3';
 
const sqlite = new Database('sqlite.db');
const db = drizzle(sqlite);

import { drizzle } from 'drizzle-orm/better-sqlite3';
import Database from 'better-sqlite3';
 
const sqlite = new Database('sqlite.db');
const db = drizzle(sqlite);

Basically, drizzle wrap each driver like above. OTOH, Drizzle can manage db object in memory? like this:

import { drizzle } from 'drizzle-orm'

const db = drizzle() // <- in memory

import { drizzle } from 'drizzle-orm'

const db = drizzle() // <- in memory

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