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Kysely Update

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Short and simple examples of how to write update queries.

Single row

Schema

import { Generated } from 'kysely'
declare global {
interface DB {
person: PersonTable
pet: PetTable
}
interface PersonTable {
id: Generated<string>
first_name: string
last_name: string | null
created_at: Generated<Date>
age: number
}
interface PetTable {
id: Generated<string>
name: string
owner_id: string
species: 'cat' | 'dog'
is_favorite: boolean
}
}

Querying

const result = await db
.updateTable('person')
.set({
first_name: 'Jennifer',
last_name: 'Aniston'
})
.where('id', '=', '1')
.executeTakeFirst()
console.log(result.numUpdatedRows)

Result

UPDATE "person"
SET
"first_name" = $1,
"last_name" = $2
WHERE
"id" = $3
-- Parameters
-- [1] Jennifer
-- [2] Aniston
-- [3] 1

Complex values

Schema

import { Generated } from 'kysely'
declare global {
interface DB {
person: PersonTable
pet: PetTable
}
interface PersonTable {
id: Generated<string>
first_name: string
last_name: string | null
created_at: Generated<Date>
age: number
}
interface PetTable {
id: Generated<string>
name: string
owner_id: string
species: 'cat' | 'dog'
is_favorite: boolean
}
}

Querying

const result = await db
.updateTable('person')
.set((eb) => ({
age: eb('age', '+', 1),
first_name: eb.selectFrom('pet').select('name').limit(1),
last_name: 'updated',
}))
.where('id', '=', '1')
.executeTakeFirst()
console.log(result.numUpdatedRows)

Result

UPDATE "person"
SET
"age" = "age" + $1,
"first_name" = (
SELECT
"name"
FROM
"pet"
LIMIT
$2
),
"last_name" = $3
WHERE
"id" = $4
-- Parameters
-- [1] 1
-- [2] 1
-- [3] updated
-- [4] 1