Drizzle Kit configuration file

This guide assumes familiarity with:

Get started with Drizzle and drizzle-kit - read here
Drizzle schema foundamentals - read here
Database connection basics - read here
Drizzle migrations foundamentals - read here
Drizzle Kit overview and config file

Drizzle Kit lets you declare configuration options in TypeScript or JavaScript configuration files.

📦 <project root>
 ├ ...
 ├ 📂 drizzle
 ├ 📂 src
 ├ 📜 drizzle.config.ts
 └ 📜 package.json

drizzle.config.ts

drizzle.config.js

import { defineConfig } from "drizzle-kit";

export default defineConfig({
  dialect: "postgresql",
  schema: "./src/schema.ts",
  out: "./drizzle",
});

Example of an extended config file

import { defineConfig } from "drizzle-kit";

export default defineConfig({
  out: "./drizzle",
  dialect: "postgresql",
  schema: "./src/schema.ts",

  driver: "pglite",
  dbCredentials: {
    url: "./database/",
  },

  extensionsFilters: ["postgis"],
  schemaFilter: "public",
  tablesFilter: "*",

  introspect: {
    casing: "camel",
  },

  migrations: {
    prefix: "timestamp",
    table: "__drizzle_migrations__",
    schema: "public",
  },

  breakpoints: true,
  strict: true,
  verbose: true,
});

Expand

Multiple configuration files

You can have multiple config files in the project, it’s very useful when you have multiple database stages or multiple databases or different databases on the same project:

npm

yarn

pnpm

bun

npx drizzle-kit generate --config=drizzle-dev.config.ts
npx drizzle-kit generate --config=drizzle-prod.config.ts

yarn drizzle-kit generate --config=drizzle-dev.config.ts
yarn drizzle-kit generate --config=drizzle-prod.config.ts

pnpm drizzle-kit generate --config=drizzle-dev.config.ts
pnpm drizzle-kit generate --config=drizzle-prod.config.ts

bun drizzle-kit generate --config=drizzle-dev.config.ts
bun drizzle-kit generate --config=drizzle-prod.config.ts

📦 <project root>
 ├ 📂 drizzle
 ├ 📂 src
 ├ 📜 .env
 ├ 📜 drizzle-dev.config.ts
 ├ 📜 drizzle-prod.config.ts
 ├ 📜 package.json
 └ 📜 tsconfig.json

Migrations folder

out param lets you define folder for your migrations, it’s optional and drizzle by default.
It’s very useful since you can have many separate schemas for different databases in the same project and have different migration folders for them.

Migration folder contains .sql migration files and _meta folder which is used by drizzle-kit

📦 <project root>
 ├ ...
 ├ 📂 drizzle
 │ ├ 📂 _meta
 │ ├ 📜 user.ts 
 │ ├ 📜 post.ts 
 │ └ 📜 comment.ts 
 ├ 📂 src
 ├ 📜 drizzle.config.ts
 └ 📜 package.json

import { defineConfig } from "drizzle-kit";

export default defineConfig({
  dialect: "postgresql", // "mysql" | "sqlite" | "postgresql"
  schema: "./src/schema/*",
  out: "./drizzle",
});

---

`dialect`

Dialect of the database you’re using


type	`postgresql` `mysql` `sqlite` `turso`
default	—
commands	`generate` `migrate` `push` `pull` `check` `up`

import { defineConfig } from "drizzle-kit";

export default defineConfig({
  dialect: "mysql", 
});

`schema`

glob based path to drizzle schema file(s) or folder(s) contaning schema files.


type	`string` `string[]`
default	—
commands	`generate` `push`

Example 1

Example 2

Example 3

Example 4

📦 <project root>
 ├ ...
 ├ 📂 drizzle
 ├ 📂 src
 │ ├ ...
 │ ├ 📜 index.ts
 │ └ 📜 schema.ts 
 ├ 📜 drizzle.config.ts
 └ 📜 package.json

import { defineConfig } from "drizzle-kit";

export default defineConfig({
  schema: "./src/schema.ts",
});

📦 <project root>
 ├ ...
 ├ 📂 drizzle
 ├ 📂 src
 │ ├ 📂 user
 │ │ ├ 📜 handler.ts 
 │ │ └ 📜 schema.ts 
 │ ├ 📂 posts
 │ │ ├ 📜 handler.ts 
 │ │ └ 📜 schema.ts 
 │ └ 📜 index.ts
 ├ 📜 drizzle.config.ts
 └ 📜 package.json

import { defineConfig } from "drizzle-kit";

export default defineConfig({
  schema: "./src/**/schema.ts",
  //or
  schema: ["./src/user/schema.ts", "./src/posts/schema.ts"]
});

📦 <project root>
 ├ ...
 ├ 📂 drizzle
 ├ 📂 src
 │ ├ 📂 schema
 │ │ ├ 📜 user.ts 
 │ │ ├ 📜 post.ts 
 │ │ └ 📜 comment.ts 
 │ └ 📜 index.ts
 ├ 📜 drizzle.config.ts
 └ 📜 package.json

import { defineConfig } from "drizzle-kit";

export default defineConfig({
  schema: "./src/schema/*",
});

📦 <project root>
 ├ ...
 ├ 📂 drizzle
 ├ 📂 src
 │ ├ 📜 userById.ts 
 │ ├ 📜 userByEmail.ts 
 │ ├ 📜 listUsers.ts 
 │ ├ 📜 user.sql.ts 
 │ ├ 📜 postById.ts 
 │ ├ 📜 listPosts.ts 
 │ └ 📜 post.sql.ts 
 │ 📜 index.ts
 ├ 📜 drizzle.config.ts
 └ 📜 package.json

import { defineConfig } from "drizzle-kit";

export default defineConfig({
  schema: "./src/**/*.sql.ts", // Dax's favourite
});

`out`

Defines output folder of your SQL migration files, json snapshots of your schema and schema.ts from drizzle-kit pull command.


type	`string` `string[]`
default	`drizzle`
commands	`generate` `migrate` `push` `pull` `check` `up`

import { defineConfig } from "drizzle-kit";

export default defineConfig({
  out: "./drizzle", 
});

`driver`

Drizzle Kit automatically picks available database driver from your current project based on the provided dialect, yet some vendor specific databases require a different subset of connection params.

driver option let’s you explicitely pick those exceptions drivers.


type	`aws-data-api` `d1-http` `pglight`
default	—
commands	`migrate` `push` `pull`

AWS Data API

PGLite

Cloudflare D1 HTTP

import { defineConfig } from "drizzle-kit";

export default defineConfig({
  dialect: "postgresql",
  schema: "./src/schema.ts",
  driver: "aws-data-api",
  dbCredentials: {
    database: "database",
    resourceArn: "resourceArn",
    secretArn: "secretArn",
  },
};

import { defineConfig } from "drizzle-kit";

export default defineConfig({
  dialect: "postgresql",
  schema: "./src/schema.ts",
  driver: "pglite",
  dbCredentials: {
    // inmemory
    url: ":memory:"
    
    // or database folder
    url: "./database/"
  },
};

import { defineConfig } from "drizzle-kit";

export default defineConfig({
  dialect: "sqlite",
  schema: "./src/schema.ts",
  driver: "d1-http",
  dbCredentials: {
    accountId: "accountId",
    databaseId: "databaseId",
    token: "token",
  },
};

---

`dbCredentials`

Database connection credentials in a form of url, user:password@host:port/db params or exceptions drivers(aws-data-api d1-http pglight ) specific connection options.


type	union of drivers connection options
default	—
commands	`migrate` `push` `pull`

PostgreSQL

MySQL

SQLite

Turso

Cloudflare D1

AWS Data API

PGLite

import { defineConfig } from 'drizzle-kit'

export default defineConfig({
  dialect: "postgresql",
  dbCredentials: {
    url: "postgres://user:password@host:port/db",
  }
})

import { defineConfig } from 'drizzle-kit'

// via connection params
export default defineConfig({
  dialect: "postgresql",
  dbCredentials: {
    host: "host",
    port: 5432,
    user: "user",
    password: "password",
    database: "dbname",
    ssl: true, // can be boolean | "require" | "allow" | "prefer" | "verify-full" | options from node:tls
  }
})

import { defineConfig } from 'drizzle-kit'

export default defineConfig({
  dialect: "mysql",
  dbCredentials: {
    url: "postgres://user:password@host:port/db",
  }
})

import { defineConfig } from 'drizzle-kit'

// via connection params
export default defineConfig({
  dialect: "mysql",
  dbCredentials: {
    host: "host",
    port: 5432,
    user: "user",
    password: "password",
    database: "dbname",
    ssl: "...", // can be: string | SslOptions (ssl options from mysql2 package)
  }
})

import { defineConfig } from 'drizzle-kit'

export default defineConfig({
  dialect: "sqlite",
  dbCredentials: {
    url: ":memory:", // inmemory database
    // or
    url: "sqlite.db", 
    // or
    url: "file:sqlite.db" // file: prefix is required by libsql
  }
})

import { defineConfig } from 'drizzle-kit'

export default defineConfig({
  dialect: "turso",
  dbCredentials: {
    url: "libsql://acme.turso.io" // remote Turso database url
    authToken: "...",

    // or if you need local db

    url: ":memory:", // inmemory database
    // or
    url: "file:sqlite.db", // file: prefix is required by libsql
  }
})

import { defineConfig } from 'drizzle-kit'

export default defineConfig({
  dialect: "sqlite",
  driver: "d1-http",
  dbCredentials: {
    accountId: "",
    databaseId: "",
    token: "",
  }
})

import { defineConfig } from 'drizzle-kit'

export default defineConfig({
  dialect: "postgresql",
  driver: "aws-data-api",
  dbCredentials: {
    database: "database",
    resourceArn: "resourceArn",
    secretArn: "secretArn",
  },
});

import { defineConfig } from 'drizzle-kit'

export default defineConfig({
  dialect: "postgresql",
  driver: "pglite",
  dbCredentials: {
    url: "./database/", // database folder path
  }
})

`migrations`

When running drizzle-kit migrate - drizzle will records about successfully applied migrations in your database in log table named __drizzle_migrations in public schema(PostgreSQL only).

migrations config options lets you change both migrations log table name and schema.


type	`{ table: string, schema: string }`
default	`{ table: "__drizzle_migrations", schema: "drizzle" }`
commands	`migrate`

export default defineConfig({
  dialect: "postgresql",
  schema: "./src/schema.ts",
  migrations: {
    table: 'my-migrations-table', // `__drizzle_migrations` by default
    schema: 'public', // used in PostgreSQL only, `drizzle` by default
  },
});

`introspect`

Cofiguration for drizzle-kit pull command.

casing is responsible for in-code column keys casing


type	`{ casing: "preserve" \| "camel" }`
default	`{ casing: "camel" }`
commands	`pull`

camel

preserve

import * as p from "drizzle-orm/pg-core"

export const users = p.pgTable("users", {
  id: p.serial(),
  firstName: p.text("first-name"),
  lastName: p.text("LastName"),
  email: p.text(),
  phoneNumber: p.text("phone_number"),
});

SELECT a.attname AS column_name, format_type(a.atttypid, a.atttypmod) as data_type FROM pg_catalog.pg_attribute a;

 column_name   | data_type        
---------------+------------------------
 id            | serial
 first-name    | text
 LastName      | text
 email         | text
 phone_number  | text

import * as p from "drizzle-orm/pg-core"

export const users = p.pgTable("users", {
  id: p.serial(),
  "first-name": p.text("first-name"),
  LastName: p.text("LastName"),
  email: p.text(),
  phone_number: p.text("phone_number"),
});

SELECT a.attname AS column_name, format_type(a.atttypid, a.atttypmod) as data_type FROM pg_catalog.pg_attribute a;

 column_name   | data_type        
---------------+------------------------
 id            | serial
 first-name    | text
 LastName      | text
 email         | text
 phone_number  | text

---

`tablesFilter`

If you want to run multiple projects with one database - check out our guide.

drizzle-kit push and drizzle-kit pull will by default manage all tables in public schema. You can configure list of tables, schemas and extensions via tablesFilters, schemaFilter and extensionFilters options.

tablesFilter option lets you specify glob based table names filter, e.g. ["users", "user_info"] or "user*"


type	`string` `string[]`
default	—
commands	`generate` `push` `pull`

import { defineConfig } from "drizzle-kit";

export default defineConfig({
  dialect: "postgresql",
  tablesFilter: ["users", "posts", "project1_*"],
});

`schemaFilter`

If you want to run multiple projects with one database - check out our guide.

schemaFilter option lets you specify list of schemas for Drizzle Kit to manage


type	`string[]`
default	`["public"]`
commands	`generate` `push` `pull`

export default defineConfig({
  dialect: "postgresql",
  schemaFilter: ["public", "schema1", "schema2"],
});

`extensionsFilters`

Some extensions like postgis, when installed on the database, create its own tables in public schema. Those tables have to be ignored by drizzle-kit push or drizzle-kit pull.

extensionsFilters option lets you declare list of installed extensions for drizzle kit to ignore their tables in the schema.


type	`["postgis"]`
default	`[]`
commands	`push` `pull`

export default defineConfig({
  dialect: "postgresql",
  extensionsFilters: ["postgis"],
});

---

`strict`

Prompts confirmation to run printed SQL statements when running drizzle-kit push command.


type	`boolean`
default	`false`
commands	`push`

export default defineConfig({
  dialect: "postgresql",
  breakpoints: false,
});

`verbose`

Print all SQL statements during drizzle-kit push command.


type	`boolean`
default	`true`
commands	`generate` `pull`

export default defineConfig({
  dialect: "postgresql",
  breakpoints: false,
});

`breakpoints`

Drizzle Kit will automatically embed --> statement-breakpoint into generated SQL migration files, that’s necessary for databases that do not support multiple DDL alternation statements in one transaction(MySQL and SQLite).

breakpoints option flag lets you switch it on and off


type	`boolean`
default	`true`
commands	`generate` `pull`

export default defineConfig({
  dialect: "postgresql",
  breakpoints: false,
});