Question

我执行时遇到以下错误。

Msg 137，Level 15，State 2，Line 2 必须声明标量变量“@user_name”。

（1行受影响）

USE [qcsl]
GO
/****** Object:  StoredProcedure [dbo].[UserAdvancedSearch]    Script Date: 3/31/2017 12:09:22 PM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE [dbo].[UserAdvancedSearch]
    -- Add the parameters for the stored procedure here
    (
    @user_name varchar(50) = NULL,
    @role_id int = 2,
    @user_status int = 1



    )
    AS
BEGIN
    -- SET NOCOUNT ON added to prevent extra result sets from
    -- interfering with SELECT statements.
    SET NOCOUNT ON;

    -- Insert statements for procedure here
DECLARE @query varchar(2000);
SET @query = 'select * from user_main
where (CONCAT(user_first_name,user_last_name) like  CONCAT(@user_name) OR CONCAT(CONCAT(user_first_name,user_last_name) IS NULL)
AND
(user_role_id_ref=@role_id OR user_role_id_ref IS NULL)
AND
(user_status = @user_status OR user_status IS NULL)';
EXEC(@query)
END

Answer 1

由于您在动态查询中有参数，因此请修改您的执行查询，如下所示并尝试。

EXEC SP_EXECUTESQL @query,N' @user_name varchar(50),@role_id  INT,@user_status int',@user_name=@user_name,@role_id=@role_id,@user_status=user_status

此外，修改您的代码行

DECLARE @query varchar(2000);

到

DECLARE @query nvarchar(2000);

SQL存储过程 - 必须声明标量变量“@user_name”

1 个答案: