import Tab from '@mdx/Tab.astro'; import Tabs from '@mdx/Tabs.astro'; import IsSupportedChipGroup from '@mdx/IsSupportedChipGroup.astro'; import Section from '@mdx/Section.astro'; import Callout from '@mdx/Callout.astro'; # Table schemas Drizzle ORM provides you an API for declaring SQL schemas for PostgreSQL and MySQL dialects. If you declare an entity within a schema, query builder will prepend schema names in queries:
`select * from "schema"."users"`

```ts copy {3,5,7} import { serial, text, pgSchema } from "drizzle-orm/pg-core"; export const mySchema = pgSchema("my_schema"); export const colors = mySchema.enum('colors', ['red', 'green', 'blue']); export const mySchemaUsers = mySchema.table('users', { id: serial('id').primaryKey(), name: text('name'), color: colors('color').default('red'), }); ``` ```sql CREATE SCHEMA "my_schema"; CREATE TYPE "my_schema"."colors" AS ENUM ('red', 'green', 'blue'); CREATE TABLE "my_schema"."users" ( "id" serial PRIMARY KEY, "name" text, "color" "my_schema"."colors" DEFAULT 'red' ); ```

```ts {3,5} import { int, text, mysqlSchema } from "drizzle-orm/mysql-core"; export const mySchema = mysqlSchema("my_schema") export const mySchemaUsers = mySchema.table("users", { id: int("id").primaryKey().autoincrement(), name: text("name"), }); ``` ```sql CREATE SCHEMA "my_schema"; CREATE TABLE "my_schema"."users" ( "id" serial PRIMARY KEY, "name" text ); ```

SQLite does not have support for schemas 😕

```ts {3,5} import { int, text, singlestoreSchema } from "drizzle-orm/singlestore-core"; export const mySchema = singlestoreSchema("my_schema") export const mySchemaUsers = mySchema.table("users", { id: int("id").primaryKey().autoincrement(), name: text("name"), }); ``` ```sql CREATE SCHEMA "my_schema"; CREATE TABLE "my_schema"."users" ( "id" serial PRIMARY KEY, "name" text ); ```

{/* TODO: ??? example > **Warning** > If you will have tables with same names in different schemas then drizzle will respond with `never[]` error in result types and error from database > > In this case you may use [alias syntax](./joins#join-aliases-and-self-joins) */}