SqlNullabilityProcessor.VisitSqlFunction 方法

定義

命名空間:

Microsoft.EntityFrameworkCore.Query

組件:

Microsoft.EntityFrameworkCore.Relational.dll

套件:

Microsoft.EntityFrameworkCore.Relational v9.0.0

來源:

SqlNullabilityProcessor.cs

SqlFunctionExpression造訪 並計算其可為 Null 性。

protected virtual Microsoft.EntityFrameworkCore.Query.SqlExpressions.SqlExpression VisitSqlFunction (Microsoft.EntityFrameworkCore.Query.SqlExpressions.SqlFunctionExpression sqlFunctionExpression, bool allowOptimizedExpansion, out bool nullable);

abstract member VisitSqlFunction : Microsoft.EntityFrameworkCore.Query.SqlExpressions.SqlFunctionExpression * bool * bool -> Microsoft.EntityFrameworkCore.Query.SqlExpressions.SqlExpression
override this.VisitSqlFunction : Microsoft.EntityFrameworkCore.Query.SqlExpressions.SqlFunctionExpression * bool * bool -> Microsoft.EntityFrameworkCore.Query.SqlExpressions.SqlExpression

Protected Overridable Function VisitSqlFunction (sqlFunctionExpression As SqlFunctionExpression, allowOptimizedExpansion As Boolean, ByRef nullable As Boolean) As SqlExpression

參數

sqlFunctionExpression

SqlFunctionExpression

要造訪的 sql 函式運算式。

allowOptimizedExpansion

Boolean

布林值，指出是否允許將 Null 值視為 false 值的優化擴充。

nullable

Boolean

bool 值，指出 sql 運算式是否可為 Null。

傳回

SqlExpression

優化的 sql 運算式。