Lingua

ISqlExpressionFactory.IsNull(SqlExpression) Metodo

Definizione

Spazio dei nomi:
Microsoft.EntityFrameworkCore.Query
Assembly:
Microsoft.EntityFrameworkCore.Relational.dll
Pacchetto:
Microsoft.EntityFrameworkCore.Relational v10.0.0
Pacchetto:
Microsoft.EntityFrameworkCore.Relational v11.0.0
Pacchetto:
Microsoft.EntityFrameworkCore.Relational v3.0.0
Pacchetto:
Microsoft.EntityFrameworkCore.Relational v3.1.0
Pacchetto:
Microsoft.EntityFrameworkCore.Relational v5.0.0
Pacchetto:
Microsoft.EntityFrameworkCore.Relational v6.0.0
Pacchetto:
Microsoft.EntityFrameworkCore.Relational v7.0.0
Pacchetto:
Microsoft.EntityFrameworkCore.Relational v8.0.0
Pacchetto:
Microsoft.EntityFrameworkCore.Relational v9.0.0
Origine:
ISqlExpressionFactory.cs
Origine:
ISqlExpressionFactory.cs
Origine:
ISqlExpressionFactory.cs
Origine:
ISqlExpressionFactory.cs
Origine:
ISqlExpressionFactory.cs

Crea un nuovo SqlExpression oggetto che rappresenta l'uguaglianza con null.

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

Parametri

operand
SqlExpression

Oggetto SqlExpression da confrontare con null.

Valori restituiti

SqlExpression
SqlUnaryExpression

Espressione che rappresenta un costrutto IS NULL in un albero SQL.

Si applica a