drizzle-team/drizzle-kit-mirror

Docs and issues repository for drizzle-kit

Drizzle Kit

DrizzleKit - is a CLI migrator tool for DrizzleORM. It is probably one and only tool that lets you completely automatically generate SQL migrations and covers ~95% of the common cases like deletions and renames by prompting user input. https://github.com/drizzle-team/drizzle-kit-mirror - is a mirror repository for issues.

Documentation

Check the full documenation on the website

How it works

drizzle-kit will traverse schema folder or schema file, generate schema snapshot and compare it to the previous version, if there's one. Based on the difference it will generate all needed SQL migrations and if there are any automatically unresolvable cases like renames it will prompt user for input.

For schema file:

// ./src/db/schema.ts

import { integer, pgTable, serial, text, varchar } from "drizzle-orm/pg-core";

const users = pgTable("users", {
    id: serial("id").primaryKey(),
    fullName: varchar("full_name", { length: 256 }),
  }, (table) => ({
    nameIdx: index("name_idx", table.fullName),
  })
);

export const authOtp = pgTable("auth_otp", {
  id: serial("id").primaryKey(),
  phone: varchar("phone", { length: 256 }),
  userId: integer("user_id").references(() => users.id),
});

It will generate:

CREATE TABLE IF NOT EXISTS auth_otp (
 "id" SERIAL PRIMARY KEY,
 "phone" character varying(256),
 "user_id" INT
);

CREATE TABLE IF NOT EXISTS users (
 "id" SERIAL PRIMARY KEY,
 "full_name" character varying(256)
);

DO $$ BEGIN
 ALTER TABLE auth_otp ADD CONSTRAINT auth_otp_user_id_fkey FOREIGN KEY ("user_id") REFERENCES users(id);
EXCEPTION
 WHEN duplicate_object THEN null;
END $$;

CREATE INDEX IF NOT EXISTS users_full_name_index ON users (full_name);

Installation & configuration

npm install -D drizzle-kit

Running with CLI options

// package.json
{
 "scripts": {
  "generate": "drizzle-kit generate:pg --out migrations-folder --schema src/db/schema.ts"
 }
}

npm run generate