Interface IUpsertUpdateSpec<TTarget>
Fluent configuration builder for the UPDATE branch of an Upsert operation. Inherits
Set (3 overloads) / Ignore from
IEntityUpdateSpec<TTarget, TBuilder> (with itself substituted as
TBuilder, so chain methods return IUpsertUpdateSpec<TTarget>) and
adds the Upsert-only chain methods When(Expression<Func<TTarget, TTarget, bool>>) / DoNothing(), which have
no SQL meaning outside MERGE / ON CONFLICT.
public interface IUpsertUpdateSpec<TTarget> : IEntityUpdateSpec<TTarget, IUpsertUpdateSpec<TTarget>> where TTarget : notnullType Parameters
TTargetTarget table record type.
- Inherited Members
- Extension Methods
Remarks
This interface is used only as the receiver type of an expression tree captured by linq2db. The configure expression is parsed by linq2db and is not invoked; implementing this interface is not a supported extension point.
Methods
DoNothing()
Marks the UPDATE branch as explicitly empty.
IUpsertUpdateSpec<TTarget> DoNothing()Returns
- IUpsertUpdateSpec<TTarget>
When(Expression<Func<TTarget, TTarget, bool>>)
Adds a target/source-row predicate: update only when the predicate holds (WHEN MATCHED AND …).
IUpsertUpdateSpec<TTarget> When(Expression<Func<TTarget, TTarget, bool>> condition)Parameters
conditionExpression<Func<TTarget, TTarget, bool>>
Returns
- IUpsertUpdateSpec<TTarget>