Last Updated: 3/9/2026

Class AlteredColumnBuilder

Allows us to force consumers to do exactly one alteration to a column.

One cannot do no alterations:

await db.schema .alterTable('person') // .execute() // Property 'execute' does not exist on type 'AlteredColumnBuilder'. await db.schema .alterTable('person') // .alterColumn('age', (ac) => ac) // Type 'AlterColumnBuilder' is not assignable to type 'AlteredColumnBuilder'. // .execute()

One cannot do multiple alterations:

await db.schema .alterTable('person') // .alterColumn('age', (ac) => ac.dropNotNull().setNotNull()) // Property 'setNotNull' does not exist on type 'AlteredColumnBuilder'. // .execute()

Which would now throw a compilation error, instead of a runtime error.

Implements

Index

Constructors

Methods

Constructors

constructor

Parameters

Returns AlteredColumnBuilder

Methods

toOperationNode

Returns AlterColumnNode

Implementation of OperationNodeSource.toOperationNode

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