Class MatchedThenableMergeQueryBuilder<DB, TT, ST, UT, O>

Performs the delete action.

To perform the do nothing action, see thenDoNothing.

To perform the update action, see thenUpdate or thenUpdateSet.

Examples

const result = await db.mergeInto('person')
  .using('pet', 'person.id', 'pet.owner_id')
  .whenMatched()
  .thenDelete()
  .execute()
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The generated SQL (PostgreSQL):

merge into "person"
using "pet" on "person"."id" = "pet"."owner_id"
when matched then
  delete
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Performs the do nothing action.

This is supported in PostgreSQL.

To perform the delete action, see thenDelete.

To perform the update action, see thenUpdate or thenUpdateSet.

Examples

const result = await db.mergeInto('person')
  .using('pet', 'person.id', 'pet.owner_id')
  .whenMatched()
  .thenDoNothing()
  .execute()
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The generated SQL (PostgreSQL):

merge into "person"
using "pet" on "person"."id" = "pet"."owner_id"
when matched then
  do nothing
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Perform an update operation with a full-fledged UpdateQueryBuilder. This is handy when multiple set invocations are needed.

For a shorthand version of this method, see thenUpdateSet.

To perform the delete action, see thenDelete.

To perform the do nothing action, see thenDoNothing.

Examples

import { sql } from 'kysely'

const result = await db.mergeInto('person')
  .using('pet', 'person.id', 'pet.owner_id')
  .whenMatched()
  .thenUpdate((ub) => ub
    .set(sql`metadata['has_pets']`, 'Y')
    .set({
      updated_at: Date.now(),
    })
  )
  .execute()
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The generated SQL (PostgreSQL):

merge into "person"
using "pet" on "person"."id" = "pet"."owner_id"
when matched then
  update set metadata['has_pets'] = $1, "updated_at" = $2
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Performs an update set action, similar to set.

For a full-fledged update query builder, see thenUpdate.

To perform the delete action, see thenDelete.

To perform the do nothing action, see thenDoNothing.

Examples

const result = await db.mergeInto('person')
  .using('pet', 'person.id', 'pet.owner_id')
  .whenMatched()
  .thenUpdateSet({
    middle_name: 'dog owner',
  })
  .execute()
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The generate SQL (PostgreSQL):

merge into "person"
using "pet" on "person"."id" = "pet"."owner_id"
when matched then
  update set "middle_name" = $1
Copy