次の方法で共有

SqlExpressionFactory.IsNull(SqlExpression) Method

  • Reference

Definition

Namespace:
Microsoft.EntityFrameworkCore.Query
Assembly:
Microsoft.EntityFrameworkCore.Relational.dll
Package:
Microsoft.EntityFrameworkCore.Relational v3.0.0
Package:
Microsoft.EntityFrameworkCore.Relational v3.1.0
Package:
Microsoft.EntityFrameworkCore.Relational v5.0.0
Package:
Microsoft.EntityFrameworkCore.Relational v6.0.0
Package:
Microsoft.EntityFrameworkCore.Relational v7.0.0
Package:
Microsoft.EntityFrameworkCore.Relational v8.0.0
Package:
Microsoft.EntityFrameworkCore.Relational v9.0.0
Source:
SqlExpressionFactory.cs
Source:
SqlExpressionFactory.cs
Source:
SqlExpressionFactory.cs
Source:
SqlExpressionFactory.cs
Source:
SqlExpressionFactory.cs
Source:
SqlExpressionFactory.cs
Source:
SqlExpressionFactory.cs

Creates a new SqlExpression which represent equality to null.

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

Parameters

operand
SqlExpression

A SqlExpression to compare to null.

Returns

SqlUnaryExpression
SqlExpression

An expression representing IS NULL construct in a SQL tree.

Implements

IsNull(SqlExpression)

Applies to