共用方式為

ExistsExpression 建構函式

  • 參考

定義

命名空間:
Microsoft.EntityFrameworkCore.Query.SqlExpressions
組件:
Microsoft.EntityFrameworkCore.Relational.dll
套件:
Microsoft.EntityFrameworkCore.Relational v8.0.0
套件:
Microsoft.EntityFrameworkCore.Relational v3.0.0
套件:
Microsoft.EntityFrameworkCore.Relational v3.1.0
套件:
Microsoft.EntityFrameworkCore.Relational v5.0.0
套件:
Microsoft.EntityFrameworkCore.Relational v6.0.0
套件:
Microsoft.EntityFrameworkCore.Relational v7.0.0

多載

ExistsExpression(SelectExpression, RelationalTypeMapping)

建立 ExistsExpression 類別的新執行個體。
ExistsExpression(SelectExpression, Boolean, RelationalTypeMapping)

建立 ExistsExpression 類別的新執行個體。

ExistsExpression(SelectExpression, RelationalTypeMapping)

建立 ExistsExpression 類別的新執行個體。

public ExistsExpression (Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpression subquery, Microsoft.EntityFrameworkCore.Storage.RelationalTypeMapping? typeMapping);
new Microsoft.EntityFrameworkCore.Query.SqlExpressions.ExistsExpression : Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpression * Microsoft.EntityFrameworkCore.Storage.RelationalTypeMapping -> Microsoft.EntityFrameworkCore.Query.SqlExpressions.ExistsExpression
Public Sub New (subquery As SelectExpression, typeMapping As RelationalTypeMapping)

參數

subquery
SelectExpression

要檢查是否存在的子查詢。

typeMapping
RelationalTypeMapping

與 RelationalTypeMapping 運算式相關聯的 。

適用於

ExistsExpression(SelectExpression, Boolean, RelationalTypeMapping)

建立 ExistsExpression 類別的新執行個體。

public ExistsExpression (Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpression subquery, bool negated, Microsoft.EntityFrameworkCore.Storage.RelationalTypeMapping typeMapping);
public ExistsExpression (Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpression subquery, bool negated, Microsoft.EntityFrameworkCore.Storage.RelationalTypeMapping? typeMapping);
new Microsoft.EntityFrameworkCore.Query.SqlExpressions.ExistsExpression : Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpression * bool * Microsoft.EntityFrameworkCore.Storage.RelationalTypeMapping -> Microsoft.EntityFrameworkCore.Query.SqlExpressions.ExistsExpression
Public Sub New (subquery As SelectExpression, negated As Boolean, typeMapping As RelationalTypeMapping)

參數

subquery
SelectExpression

要檢查是否存在的子查詢。

negated
Boolean

值，指出是否存在檢查是否為負值。

typeMapping
RelationalTypeMapping

與 RelationalTypeMapping 運算式相關聯的 。

適用於