MySQL Columns - Drizzle ORM

Drizzle ORM provides type-safe column builders for all MySQL data types. Each column type maps to the corresponding MySQL type and TypeScript type.

Numeric Types

int()

MySQL INT type for 32-bit integers.

int(config?: { unsigned?: boolean }): MySqlIntBuilderInitial

config.unsigned

boolean

default:"false"

Whether the column is unsigned.

Examples

import { mysqlTable, int } from 'drizzle-orm/mysql-core';

export const users = mysqlTable('users', {
  id: int().primaryKey().autoincrement(),
  age: int(),
  score: int({ unsigned: true }),
  balance: int().notNull().default(0)
});

bigint()

MySQL BIGINT type for 64-bit integers. Supports both number and bigint modes.

bigint<TMode extends 'number' | 'bigint'>(
  config: { mode: TMode; unsigned?: boolean }
): TMode extends 'number' ? MySqlBigInt53BuilderInitial : MySqlBigInt64BuilderInitial

config.mode

'number' | 'bigint'

required

'number': Values up to 2^53-1 as JavaScript numbers
'bigint': Full 64-bit range as JavaScript bigint

config.unsigned

boolean

default:"false"

Whether the column is unsigned.

Examples

export const analytics = mysqlTable('analytics', {
  id: bigint({ mode: 'number' }).primaryKey(),
  views: bigint({ mode: 'bigint' }),
  largeNumber: bigint({ mode: 'bigint', unsigned: true })
});

tinyint()

MySQL TINYINT type for small integers (-128 to 127 or 0 to 255 unsigned).

tinyint(config?: { unsigned?: boolean }): MySqlTinyIntBuilderInitial

Examples

export const settings = mysqlTable('settings', {
  id: int().primaryKey(),
  enabled: tinyint(), // Often used for boolean flags
  priority: tinyint({ unsigned: true })
});

smallint()

MySQL SMALLINT type for small integers (-32768 to 32767 or 0 to 65535 unsigned).

smallint(config?: { unsigned?: boolean }): MySqlSmallIntBuilderInitial

Examples

export const products = mysqlTable('products', {
  id: int().primaryKey(),
  stock: smallint({ unsigned: true }),
  discount: smallint() // Can be negative
});

mediumint()

MySQL MEDIUMINT type for medium-sized integers.

mediumint(config?: { unsigned?: boolean }): MySqlMediumIntBuilderInitial

Examples

export const counters = mysqlTable('counters', {
  id: int().primaryKey(),
  visits: mediumint({ unsigned: true })
});

serial()

MySQL SERIAL type, which is an alias for BIGINT UNSIGNED NOT NULL AUTO_INCREMENT UNIQUE.

serial(): MySqlSerialBuilderInitial

serial() automatically applies .notNull(), .autoincrement(), and .primaryKey() modifiers.

Examples

export const logs = mysqlTable('logs', {
  id: serial(), // Auto-incrementing primary key
  message: varchar({ length: 255 })
});

decimal()

MySQL DECIMAL type for exact numeric values. Supports string, number, and bigint modes.

decimal<TMode extends 'string' | 'number' | 'bigint'>(config?: {
  mode?: TMode;
  precision?: number;
  scale?: number;
  unsigned?: boolean;
}): MySqlDecimalBuilderInitial

config.mode

'string' | 'number' | 'bigint'

default:"'string'"

How to represent the value in JavaScript.

config.precision

number

Total number of digits.

config.scale

number

Number of digits after decimal point.

config.unsigned

boolean

default:"false"

Whether the column is unsigned.

Examples

export const products = mysqlTable('products', {
  id: int().primaryKey(),
  price: decimal({ precision: 10, scale: 2 }), // String by default
  weight: decimal({ precision: 8, scale: 3, mode: 'number' }),
  largeValue: decimal({ precision: 20, scale: 0, mode: 'bigint' })
});

float()

MySQL FLOAT type for single-precision floating-point numbers.

float(config?: {
  precision?: number;
  scale?: number;
  unsigned?: boolean;
}): MySqlFloatBuilderInitial

Examples

export const measurements = mysqlTable('measurements', {
  id: int().primaryKey(),
  temperature: float(),
  humidity: float({ precision: 5, scale: 2 }),
  distance: float({ unsigned: true })
});

double()

MySQL DOUBLE type for double-precision floating-point numbers.

double(config?: {
  precision?: number;
  scale?: number;
  unsigned?: boolean;
}): MySqlDoubleBuilderInitial

Examples

export const coordinates = mysqlTable('coordinates', {
  id: int().primaryKey(),
  latitude: double({ precision: 10, scale: 8 }),
  longitude: double({ precision: 11, scale: 8 })
});

real()

MySQL REAL type, synonym for DOUBLE.

real(config?: {
  precision?: number;
  scale?: number;
  unsigned?: boolean;
}): MySqlRealBuilderInitial

String Types

varchar()

MySQL VARCHAR type for variable-length strings.

varchar<TEnum extends [string, ...string[]]>(config: {
  length: number;
  enum?: TEnum;
}): MySqlVarCharBuilderInitial<TEnum>

config.length

number

required

Maximum length of the string (1 to 65,535).

config.enum

string[]

Array of allowed values for type safety.

Examples

export const users = mysqlTable('users', {
  id: int().primaryKey(),
  name: varchar({ length: 255 }).notNull(),
  email: varchar({ length: 320 }).notNull().unique(),
  status: varchar({ length: 20, enum: ['active', 'inactive', 'banned'] })
});

char()

MySQL CHAR type for fixed-length strings.

char<TEnum extends [string, ...string[]]>(config: {
  length?: number;
  enum?: TEnum;
}): MySqlCharBuilderInitial<TEnum>

config.length

number

Fixed length of the string (0 to 255). Defaults to 1.

Examples

export const codes = mysqlTable('codes', {
  id: int().primaryKey(),
  countryCode: char({ length: 2 }), // 'US', 'UK', etc.
  currencyCode: char({ length: 3 }), // 'USD', 'EUR', etc.
  flag: char({ length: 1, enum: ['Y', 'N'] })
});

text()

MySQL TEXT type for long text content (up to 65,535 characters).

text<TEnum extends [string, ...string[]]>(config?: {
  enum?: TEnum;
}): MySqlTextBuilderInitial<TEnum>

Examples

export const posts = mysqlTable('posts', {
  id: int().primaryKey(),
  title: varchar({ length: 255 }),
  content: text().notNull(),
  summary: text()
});

tinytext()

MySQL TINYTEXT type for short text (up to 255 characters).

tinytext<TEnum extends [string, ...string[]]>(config?: {
  enum?: TEnum;
}): MySqlTextBuilderInitial<TEnum>

mediumtext()

MySQL MEDIUMTEXT type for medium-length text (up to 16,777,215 characters).

mediumtext<TEnum extends [string, ...string[]]>(config?: {
  enum?: TEnum;
}): MySqlTextBuilderInitial<TEnum>

Examples

export const articles = mysqlTable('articles', {
  id: int().primaryKey(),
  content: mediumtext().notNull()
});

longtext()

MySQL LONGTEXT type for very long text (up to 4,294,967,295 characters).

longtext<TEnum extends [string, ...string[]]>(config?: {
  enum?: TEnum;
}): MySqlTextBuilderInitial<TEnum>

Examples

export const documents = mysqlTable('documents', {
  id: int().primaryKey(),
  content: longtext().notNull()
});

Binary Types

binary()

MySQL BINARY type for fixed-length binary data.

binary(config?: { length?: number }): MySqlBinaryBuilderInitial

Examples

export const files = mysqlTable('files', {
  id: int().primaryKey(),
  hash: binary({ length: 32 }) // SHA-256 hash
});

varbinary()

MySQL VARBINARY type for variable-length binary data.

varbinary(config: { length: number }): MySqlVarBinaryBuilderInitial

Examples

export const uploads = mysqlTable('uploads', {
  id: int().primaryKey(),
  data: varbinary({ length: 1024 })
});

Date and Time Types

date()

MySQL DATE type for dates without time.

date<TMode extends 'date' | 'string'>(config?: {
  mode?: TMode;
}): TMode extends 'string' ? MySqlDateStringBuilderInitial : MySqlDateBuilderInitial

config.mode

'date' | 'string'

default:"'date'"

'date': JavaScript Date object
'string': ISO date string (YYYY-MM-DD)

Examples

export const events = mysqlTable('events', {
  id: int().primaryKey(),
  eventDate: date(), // Date object
  scheduledDate: date({ mode: 'string' }) // String
});

datetime()

MySQL DATETIME type for date and time.

datetime<TMode extends 'date' | 'string'>(config?: {
  mode?: TMode;
  fsp?: 0 | 1 | 2 | 3 | 4 | 5 | 6;
}): MySqlDateTimeBuilderInitial

config.mode

'date' | 'string'

default:"'date'"

How to represent the value in JavaScript.

config.fsp

0 | 1 | 2 | 3 | 4 | 5 | 6

Fractional seconds precision (0-6 digits).

Examples

export const logs = mysqlTable('logs', {
  id: int().primaryKey(),
  createdAt: datetime().notNull().defaultNow(),
  updatedAt: datetime({ fsp: 3 }), // Millisecond precision
  scheduledFor: datetime({ mode: 'string' })
});

timestamp()

MySQL TIMESTAMP type for Unix timestamps.

timestamp<TMode extends 'date' | 'string'>(config?: {
  mode?: TMode;
  fsp?: 0 | 1 | 2 | 3 | 4 | 5 | 6;
}): MySqlTimestampBuilderInitial

config.mode

'date' | 'string'

default:"'date'"

How to represent the value in JavaScript.

config.fsp

0 | 1 | 2 | 3 | 4 | 5 | 6

Fractional seconds precision.

TIMESTAMP has a range from ‘1970-01-01 00:00:01’ UTC to ‘2038-01-19 03:14:07’ UTC.

Examples

export const users = mysqlTable('users', {
  id: int().primaryKey(),
  createdAt: timestamp().notNull().defaultNow(),
  updatedAt: timestamp().notNull().defaultNow().onUpdateNow(),
  lastLogin: timestamp({ fsp: 6 }) // Microsecond precision
});

time()

MySQL TIME type for time of day.

time(config?: { fsp?: 0 | 1 | 2 | 3 | 4 | 5 | 6 }): MySqlTimeBuilderInitial

Examples

export const schedules = mysqlTable('schedules', {
  id: int().primaryKey(),
  startTime: time(),
  endTime: time({ fsp: 3 })
});

year()

MySQL YEAR type for year values.

year(): MySqlYearBuilderInitial

Examples

export const vehicles = mysqlTable('vehicles', {
  id: int().primaryKey(),
  manufactureYear: year()
});

Boolean Type

boolean()

MySQL BOOLEAN type (alias for TINYINT(1)).

boolean(): MySqlBooleanBuilderInitial

Examples

export const users = mysqlTable('users', {
  id: int().primaryKey(),
  isActive: boolean().notNull().default(true),
  emailVerified: boolean().notNull().default(false),
  isAdmin: boolean()
});

JSON Type

json()

MySQL JSON type for storing JSON data.

json<TData = unknown>(): MySqlJsonBuilderInitial

The JSON column automatically serializes/deserializes JavaScript objects.

Examples

export const users = mysqlTable('users', {
  id: int().primaryKey(),
  metadata: json(),
  preferences: json().$type<{
    theme: 'light' | 'dark';
    notifications: boolean;
  }>(),
  tags: json().$type<string[]>()
});

// Usage
await db.insert(users).values({
  id: 1,
  metadata: { source: 'web', campaign: 'summer2024' },
  preferences: { theme: 'dark', notifications: true },
  tags: ['premium', 'verified']
});

Enum Type

mysqlEnum()

MySQL ENUM type for predefined string values.

// With string array
mysqlEnum<T extends [string, ...string[]]>(
  values: T
): MySqlEnumColumnBuilderInitial<T>

// With TypeScript enum
mysqlEnum<E extends Record<string, string>>(
  enumObj: E
): MySqlEnumObjectColumnBuilderInitial<E>

values

string[]

required

Array of allowed enum values (at least one value required).

Examples

// String array enum
export const users = mysqlTable('users', {
  id: int().primaryKey(),
  role: mysqlEnum(['admin', 'user', 'guest']).notNull()
});

// TypeScript enum
enum UserRole {
  ADMIN = 'admin',
  USER = 'user',
  GUEST = 'guest'
}

export const users = mysqlTable('users', {
  id: int().primaryKey(),
  role: mysqlEnum(UserRole).notNull()
});

// With default value
export const posts = mysqlTable('posts', {
  id: int().primaryKey(),
  status: mysqlEnum(['draft', 'published', 'archived'])
    .notNull()
    .default('draft')
});

Custom Types

customType()

Define custom column types with custom serialization/deserialization logic.

customType<TData>(config: {
  dataType: () => string;
  toDriver?: (value: TData) => unknown;
  fromDriver?: (value: unknown) => TData;
}): MySqlCustomColumnBuilder

config.dataType

function

required

Function that returns the MySQL column type as a string.

config.toDriver

function

Transform value before sending to database.

config.fromDriver

function

Transform value after reading from database.

Examples

import { customType } from 'drizzle-orm/mysql-core';

// Custom Point type
type Point = { x: number; y: number };

const point = customType<Point>({
  dataType() {
    return 'point';
  },
  toDriver(value: Point): string {
    return `POINT(${value.x}, ${value.y})`;
  },
  fromDriver(value: unknown): Point {
    // Parse MySQL POINT format
    const match = String(value).match(/POINT\(([^)]+)\)/);
    if (!match) throw new Error('Invalid point format');
    const [x, y] = match[1].split(' ').map(Number);
    return { x, y };
  }
});

export const locations = mysqlTable('locations', {
  id: int().primaryKey(),
  coordinates: point().notNull()
});

// Custom encrypted string type
const encrypted = customType<string>({
  dataType() {
    return 'varchar(500)';
  },
  toDriver(value: string): string {
    return encrypt(value); // Your encryption logic
  },
  fromDriver(value: unknown): string {
    return decrypt(String(value)); // Your decryption logic
  }
});

export const secrets = mysqlTable('secrets', {
  id: int().primaryKey(),
  apiKey: encrypted().notNull()
});

Column Modifiers

All column types support these common modifiers:

notNull()

Makes the column required (NOT NULL constraint).

varchar({ length: 255 }).notNull()

default()

Sets a default value for the column.

int().default(0)
varchar({ length: 50 }).default('unknown')
boolean().default(false)

defaultNow()

Sets default to current timestamp (for date/time columns).

timestamp().defaultNow()
datetime().defaultNow()

onUpdateNow()

Automatically updates to current timestamp on row update (for timestamp columns).

timestamp().notNull().defaultNow().onUpdateNow()

primaryKey()

Marks the column as primary key.

int().primaryKey()
serial() // Automatically includes primaryKey

autoincrement()

Enables auto-increment for integer columns.

int().primaryKey().autoincrement()

unique()

Adds a unique constraint to the column.

varchar({ length: 255 }).unique()

references()

Defines a foreign key reference to another table.

int().references(() => users.id)
int().references(() => users.id, { onDelete: 'cascade' })

$type()

Overrides the TypeScript type for the column.

json().$type<{ name: string; age: number }>()
varchar({ length: 255 }).$type<'admin' | 'user'>()

PostgreSQL

MySQL

SQLite

Core APIs

Drizzle Kit

​Numeric Types

​int()

​Examples

​bigint()

​Examples

​tinyint()

​Examples

​smallint()

​Examples

​mediumint()

​Examples

​serial()

​Examples

​decimal()

​Examples

​float()

​Examples

​double()

​Examples

​real()

​String Types

​varchar()

​Examples

​char()

​Examples

​text()

​Examples

​tinytext()

​mediumtext()

​Examples

​longtext()

​Examples

​Binary Types

​binary()

​Examples

​varbinary()

​Examples

​Date and Time Types

​date()

​Examples

​datetime()

​Examples

​timestamp()

​Examples

​time()

​Examples

​year()

​Examples

​Boolean Type

​boolean()

​Examples

​JSON Type

​json()

​Examples

​Enum Type

​mysqlEnum()

​Examples

​Custom Types

​customType()

​Examples

​Column Modifiers

​notNull()

​default()

​defaultNow()

​onUpdateNow()

​primaryKey()

​autoincrement()

​unique()

​references()

​$type()

Build docs developers (and LLMs) love

Numeric Types

int()

Examples

bigint()

Examples

tinyint()

Examples

smallint()

Examples

mediumint()

Examples

serial()

Examples

decimal()

Examples

float()

Examples

double()

Examples

real()

String Types

varchar()

Examples

char()

Examples

text()

Examples

tinytext()

mediumtext()

Examples

longtext()

Examples

Binary Types

binary()

Examples

varbinary()

Examples

Date and Time Types

date()

Examples

datetime()

Examples

timestamp()

Examples

time()

Examples

year()

Examples

Boolean Type

boolean()

Examples

JSON Type

json()

Examples

Enum Type

mysqlEnum()

Examples

Custom Types

customType()

Examples

Column Modifiers

notNull()

default()

defaultNow()

onUpdateNow()

primaryKey()

autoincrement()

unique()

references()

$type()