SqlExpressionFactory.IsNull(SqlExpression) Metode

  • Referensi

Definisi

Ruang nama:
Microsoft.EntityFrameworkCore.Query
Rakitan:
Microsoft.EntityFrameworkCore.Relational.dll
Paket:
Microsoft.EntityFrameworkCore.Relational v3.0.0
Paket:
Microsoft.EntityFrameworkCore.Relational v3.1.0
Paket:
Microsoft.EntityFrameworkCore.Relational v5.0.0
Paket:
Microsoft.EntityFrameworkCore.Relational v6.0.0
Paket:
Microsoft.EntityFrameworkCore.Relational v7.0.0
Paket:
Microsoft.EntityFrameworkCore.Relational v8.0.0

Membuat baru SqlUnaryExpression yang mewakili kesetaraan ke null.

public virtual Microsoft.EntityFrameworkCore.Query.SqlExpressions.SqlUnaryExpression IsNull (Microsoft.EntityFrameworkCore.Query.SqlExpressions.SqlExpression operand);
abstract member IsNull : Microsoft.EntityFrameworkCore.Query.SqlExpressions.SqlExpression -> Microsoft.EntityFrameworkCore.Query.SqlExpressions.SqlUnaryExpression
override this.IsNull : Microsoft.EntityFrameworkCore.Query.SqlExpressions.SqlExpression -> Microsoft.EntityFrameworkCore.Query.SqlExpressions.SqlUnaryExpression
Public Overridable Function IsNull (operand As SqlExpression) As SqlUnaryExpression

Parameter

operand
SqlExpression

A SqlExpression untuk dibandingkan dengan null.

Mengembalikan

SqlUnaryExpression

Ekspresi yang mewakili konstruksi IS NULL di pohon SQL.

Penerapan

IsNull(SqlExpression)

Berlaku untuk