CreateTableBuilder<TColumns>.UniqueConstraint Method
Definition
Important
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Configures a unique constraint on the table.
public virtual Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.OperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AddUniqueConstraintOperation> UniqueConstraint (string name, System.Linq.Expressions.Expression<Func<TColumns,object>> columns);abstract member UniqueConstraint : string * System.Linq.Expressions.Expression<Func<'Columns, obj>> -> Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.OperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AddUniqueConstraintOperation>
override this.UniqueConstraint : string * System.Linq.Expressions.Expression<Func<'Columns, obj>> -> Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.OperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AddUniqueConstraintOperation>Public Overridable Function UniqueConstraint (name As String, columns As Expression(Of Func(Of TColumns, Object))) As OperationBuilder(Of AddUniqueConstraintOperation)Parameters
- name
- String
The constraint name.
- columns
- Expression<Func<TColumns,Object>>
The columns that make up the constraint.
Returns
The same builder so that multiple calls can be chained.
Applies to
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Entity Framework