Last Updated: 3/9/2026

kysely

• DummyDriver

Class DummyDriver

A driver that does absolutely nothing.

You can use this to create Kysely instances solely for building queries

Examples

This example creates a Kysely instance for building postgres queries:

import { DummyDriver,  Kysely,  PostgresAdapter,  PostgresIntrospector,  PostgresQueryCompiler} from  'kysely' import  type { Database } from  'type-editor'  // imaginary module const  db = new  Kysely< Database>({ dialect: { createAdapter: () =>  new  PostgresAdapter(),  createDriver: () =>  new  DummyDriver(),  createIntrospector: (db: Kysely< any>) =>  new  PostgresIntrospector(db),  createQueryCompiler: () =>  new  PostgresQueryCompiler(), },})

You can use it to build a query and compile it to SQL but trying to execute the query will throw an error.

const { sql } = db. selectFrom('person'). selectAll(). compile() console. log(sql) // select * from "person"

Implements

• Driver

Index

Constructors

constructor

Methods

acquireConnection beginTransaction commitTransaction destroy init releaseConnection releaseSavepoint rollbackToSavepoint rollbackTransaction savepoint

Constructors

constructor

• new DummyDriver(): DummyDriver

  Returns DummyDriver

Methods

acquireConnection

• acquireConnection(): Promise<DatabaseConnection>

  Acquires a new connection from the pool.

  Returns Promise<DatabaseConnection>

beginTransaction

• beginTransaction(): Promise<void>

  Begins a transaction.

  Returns Promise<void>

commitTransaction

• commitTransaction(): Promise<void>

  Commits a transaction.

  Returns Promise<void>

destroy

• destroy(): Promise<void>

  Destroys the driver and releases all resources.

  Returns Promise<void>

init

• init(): Promise<void>

  Initializes the driver.

  After calling this method the driver should be usable and acquireConnection etc. methods should be callable.

  Returns Promise<void>

releaseConnection

• releaseConnection(): Promise<void>

  Releases a connection back to the pool.

  Returns Promise<void>

releaseSavepoint

• releaseSavepoint(): Promise<void>

  Releases a savepoint within a transaction.

  Returns Promise<void>

rollbackToSavepoint

• rollbackToSavepoint(): Promise<void>

  Rolls back to a savepoint within a transaction.

  Returns Promise<void>

rollbackTransaction

• rollbackTransaction(): Promise<void>

  Rolls back a transaction.

  Returns Promise<void>

savepoint

• savepoint(): Promise<void>

  Establishses a new savepoint within a transaction.

  Returns Promise<void>

Settings

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ExamplesConstructors

constructor

Methods

acquireConnectionbeginTransactioncommitTransactiondestroyinitreleaseConnectionreleaseSavepointrollbackToSavepointrollbackTransactionsavepoint