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SqlExpressionFactory.Exists Method

  • Reference

Definition

Namespace:
Microsoft.EntityFrameworkCore.Query
Assembly:
Microsoft.EntityFrameworkCore.Relational.dll
Package:
Microsoft.EntityFrameworkCore.Relational v8.0.0
Package:
Microsoft.EntityFrameworkCore.Relational v9.0.0
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

Overloads

Exists(SelectExpression)

Creates a new ExistsExpression which represents an EXISTS operation in a SQL tree.
Exists(SelectExpression, Boolean)

Creates a new ExistsExpression which represents an EXISTS operation in a SQL tree.

Exists(SelectExpression)

Source:
SqlExpressionFactory.cs
Source:
SqlExpressionFactory.cs

Creates a new ExistsExpression which represents an EXISTS operation in a SQL tree.

public virtual Microsoft.EntityFrameworkCore.Query.SqlExpressions.ExistsExpression Exists (Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpression subquery);
public virtual Microsoft.EntityFrameworkCore.Query.SqlExpressions.SqlExpression Exists (Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpression subquery);
abstract member Exists : Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpression -> Microsoft.EntityFrameworkCore.Query.SqlExpressions.ExistsExpression
override this.Exists : Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpression -> Microsoft.EntityFrameworkCore.Query.SqlExpressions.ExistsExpression
abstract member Exists : Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpression -> Microsoft.EntityFrameworkCore.Query.SqlExpressions.SqlExpression
override this.Exists : Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpression -> Microsoft.EntityFrameworkCore.Query.SqlExpressions.SqlExpression
Public Overridable Function Exists (subquery As SelectExpression) As ExistsExpression
Public Overridable Function Exists (subquery As SelectExpression) As SqlExpression

Parameters

subquery
SelectExpression

A subquery to check existence of.

Returns

ExistsExpression
SqlExpression

An expression representing an EXISTS operation in a SQL tree.

Implements

Exists(SelectExpression)

Applies to

Exists(SelectExpression, Boolean)

Source:
SqlExpressionFactory.cs
Source:
SqlExpressionFactory.cs
Source:
SqlExpressionFactory.cs
Source:
SqlExpressionFactory.cs
Source:
SqlExpressionFactory.cs

Creates a new ExistsExpression which represents an EXISTS operation in a SQL tree.

public virtual Microsoft.EntityFrameworkCore.Query.SqlExpressions.ExistsExpression Exists (Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpression subquery, bool negated);
abstract member Exists : Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpression * bool -> Microsoft.EntityFrameworkCore.Query.SqlExpressions.ExistsExpression
override this.Exists : Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpression * bool -> Microsoft.EntityFrameworkCore.Query.SqlExpressions.ExistsExpression
Public Overridable Function Exists (subquery As SelectExpression, negated As Boolean) As ExistsExpression

Parameters

subquery
SelectExpression

A subquery to check existence of.

negated
Boolean

A value indicating if the existence check is negated.

Returns

ExistsExpression

An expression representing an EXISTS operation in a SQL tree.

Implements

Exists(SelectExpression, Boolean)

Applies to