Question

错误：过程需要参数＆＃39; @ params＆＃39;类型＆n; ntext / nchar / nvarchar＆＃39;。

目标：根据Sql传回一个值

代码：（VB.NET）

With command
    .Connection = connection
    .CommandText = "spAuditLoggerSystemUser" 'include audit names
    .CommandType = CommandType.StoredProcedure
    .Parameters.Clear()
    .Parameters.AddWithValue("@EmployeeID", CInt(vEmployeeID))

    Dim parameter As SqlParameter = command.Parameters.Add("@LineID", SqlDbType.Int)
    parameter.Direction = ParameterDirection.Output
    command.ExecuteNonQuery()
    vLineID = command.Parameters("@LineID").Value.ToString()

    .ExecuteNonQuery()
End With

存储过程：

GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

ALTER PROCEDURE [dbo].[spAuditLoggerSystemUser]
(
    @LineID INT OUTPUT,
    @EmployeeID int  
)

AS

BEGIN

SET NOCOUNT ON;
DECLARE @SQL NVARCHAR(MAX) 


SELECT @SQL = 'SELECT ID  
FROM taylorwoodrow.dbo.TblEmployeeDetails WHERE EmployeeID = ''' + (LTRIM(RTRIM(@EmployeeID))) + '''';

EXEC sp_executesql @SQL,@LineID OUT; 
PRINT @LineID 

END

如果执行以下操作，我将返回（正确的）打印值：

DECLARE @SQL NVARCHAR(MAX)
DECLARE @EmployeeID AS INT
DECLARE @LineID NVARCHAR(MAX)
SET @EmployeeID = '1213'

SELECT @SQL = 'SELECT ID  
FROM DB.dbo.TblEmployeeDetails WHERE EmployeeID = ''' + (LTRIM(RTRIM(@EmployeeID))) + '''';

EXEC sp_executesql @SQL,@LineID OUT; 
PRINT @LineID

我使用Execute stored procedure with an Output parameter?作为参考

Answer 1

您无需在存储过程中使用动态SQL。尝试：

ALTER PROCEDURE [dbo].[spAuditLoggerSystemUser]
(
    @LineID INT OUTPUT,
    @EmployeeID int  
)

AS

BEGIN

SET NOCOUNT ON;

SELECT @LineID = ID  
FROM taylorwoodrow.dbo.TblEmployeeDetails 
WHERE EmployeeID = @EmployeeID 

END

程序需要参数＆＃39; @ params＆＃39;类型＆n; ntext / nchar / nvarchar＆＃39;

1 个答案: