QuerySqlGenerator.VisitFromSql(FromSqlExpression) 方法
定义
重要
一些信息与预发行产品相关,相应产品在发行之前可能会进行重大修改。 对于此处提供的信息,Microsoft 不作任何明示或暗示的担保。
为用户提供的 SQL 查询生成 SQL。
protected override System.Linq.Expressions.Expression VisitFromSql(Microsoft.EntityFrameworkCore.Query.SqlExpressions.FromSqlExpression fromSqlExpression);
protected virtual System.Linq.Expressions.Expression VisitFromSql(Microsoft.EntityFrameworkCore.Query.SqlExpressions.FromSqlExpression fromSqlExpression);
override this.VisitFromSql : Microsoft.EntityFrameworkCore.Query.SqlExpressions.FromSqlExpression -> System.Linq.Expressions.Expression
abstract member VisitFromSql : Microsoft.EntityFrameworkCore.Query.SqlExpressions.FromSqlExpression -> System.Linq.Expressions.Expression
override this.VisitFromSql : Microsoft.EntityFrameworkCore.Query.SqlExpressions.FromSqlExpression -> System.Linq.Expressions.Expression
Protected Overrides Function VisitFromSql (fromSqlExpression As FromSqlExpression) As Expression
Protected Overridable Function VisitFromSql (fromSqlExpression As FromSqlExpression) As Expression
参数
- fromSqlExpression
- FromSqlExpression
FromSqlExpression要为其生成 SQL。
返回
修改后的表达式(如果修改了该表达式或任何子表达式);否则,返回原始表达式。