drizzle-orm

What is drizzle-orm?

Drizzle ORM is a TypeScript-first ORM for Node.js that focuses on type safety, performance, and simplicity. It provides a fluent API for defining and querying your database schema, making it easier to work with SQL databases in a type-safe manner.

What are drizzle-orm's main functionalities?

Schema Definition

Drizzle ORM allows you to define your database schema using a fluent API. This makes it easy to create and manage your database tables with type safety.

const { defineSchema, types } = require('drizzle-orm');

const schema = defineSchema({
  users: {
    id: types.int().primaryKey().autoIncrement(),
    name: types.string().notNull(),
    email: types.string().unique().notNull()
  }
});

Query Building

You can build and execute SQL queries using a fluent API. This example demonstrates how to select users with the name 'John Doe'.

const { select } = require('drizzle-orm');

const users = await select(schema.users)
  .where(schema.users.name.eq('John Doe'))
  .execute();

Type Safety

Drizzle ORM ensures type safety throughout your database operations. This example shows how to insert a new user into the users table with type-checked values.

const { insert } = require('drizzle-orm');

await insert(schema.users).values({
  name: 'Jane Doe',
  email: '[e-mail]'
}).execute();

Migrations

Drizzle ORM supports database migrations, allowing you to evolve your database schema over time. This example demonstrates how to create and drop a 'posts' table.

const { migrate } = require('drizzle-orm');

await migrate(schema, {
  migrations: [
    {
      up: async (db) => {
        await db.schema.createTable('posts', {
          id: types.int().primaryKey().autoIncrement(),
          title: types.string().notNull(),
          content: types.text().notNull(),
          userId: types.int().references(schema.users.id)
        });
      },
      down: async (db) => {
        await db.schema.dropTable('posts');
      }
    }
  ]
});

Other packages similar to drizzle-orm

sequelize

Sequelize is a promise-based Node.js ORM for Postgres, MySQL, MariaDB, SQLite, and Microsoft SQL Server. It features solid transaction support, relations, eager and lazy loading, read replication, and more. Compared to Drizzle ORM, Sequelize has a larger community and more extensive documentation but may lack some of the type safety features that Drizzle ORM offers.

typeorm

TypeORM is an ORM for TypeScript and JavaScript (ES7, ES6, ES5). It supports many database systems including MySQL, MariaDB, PostgreSQL, SQLite, and more. TypeORM is known for its extensive feature set and active community. It provides decorators for defining entities and supports advanced features like migrations, caching, and more. Compared to Drizzle ORM, TypeORM offers more features but may be more complex to set up and use.

knex

Knex.js is a SQL query builder for PostgreSQL, MySQL, MariaDB, SQLite3, and Oracle. It features a flexible and powerful API for building SQL queries and managing database schema. While Knex.js is not a full-fledged ORM, it can be used in conjunction with other libraries to provide ORM-like functionality. Compared to Drizzle ORM, Knex.js offers more control over raw SQL queries but lacks the built-in type safety and higher-level abstractions.

README

DrizzleORM

DrizzleORM is a TypeScript ORM library with a drizzle-kit CLI companion for automatic SQL migrations generation. It's meant to be a library, not a framework, stay as an opt-in solution all the time at any levels. We try to follow SQL-like syntax whenever possible, be strongly typed ground top and fail in compile time, not in runtime. We implemented best in class joins and second to none migrations generation. Library has almost zero dependencies and being battle tested on production projects by multiple teams 🚀

database	support
PostgreSQL	✅	Docs
MySQL	✅	Docs
SQLite	⏳
DynamoDB	⏳
MS SQL	⏳
CockroachDB	⏳

Installation

// postgresql
npm install drizzle-orm drizzle-orm-pg
npm install -D drizzle-kit