我使用的是 EF 代码优先方法,并且我使用迁移创建了存储过程,如下所示:
public override void Up()
{
Sql(@"CREATE TYPE IdsList AS TABLE
(
Id Int
)
GO
Create Procedure getChildIds(
@IdsList dbo.IdsList ReadOnly
)
As
Begin
WITH RecursiveCTE AS
(
SELECT Id
FROM dbo.PhysicalObjects
WHERE ParentId in (Select * from @IdsList)
--Where Id=108
UNION ALL
SELECT t.Id
FROM dbo.PhysicalObjects t
INNER JOIN RecursiveCTE cte ON t.ParentId = cte.Id
)
SELECT * FROM RecursiveCTE
End");
}
public override void Down()
{
Sql(@"Drop Type IdsList
Go
Drop Procedure getChildIds");
}
现在,如果我转到 sql server management studio 并执行以下脚本:
Declare @Ids dbo.IdsList
Insert into @Ids
SELECT 1
Exec getChildIds @Ids
它将成功执行,但现在我正尝试按如下方式执行该存储过程:
var idsList = new SqlParameter {ParameterName = "idsList", Value = new int[] { 1,2,3,4,5} };
var idParams = new SqlParameter("idParams", SqlDbType.Structured)
{
Direction = System.Data.ParameterDirection.Output
};
var results = dbContext.Database.SqlQuery<int>("getChildIds @idsList, @idParams out", idsList,idParams) ;
var idsResult = (List<int>)idParams.Value;
它不返回任何东西。
那么如何执行带有表类型输入和输出参数的存储过程呢?
最佳答案
您必须以不同的方式获取您的数据:
关于c# - 如何使用EF执行带有输入和输出参数的存储过程?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/48866189/