Where声明变量Sql Server

Question

声明可以通过SQL Server 2008中声明的变量传递Where语句吗？我该如何做这样的事情？

declare @foo as nvarchar(max) = '9510,9580,5030' 
SELECT T1.[ItemCode] 
FROM tbl1 T1 
WHERE T1.ItemCode in (@foo) 

当我运行这段代码我foo的变量可以容纳至少一个项目或100个项目，一个依赖于另一个结果

Answer 1

您可以通过使用EXEC做到这一点。

declare @foo as nvarchar(max) = '9510,9580,5030' 

declare @SQLString as nvarchar(max) 
set @SQLString = 'SELECT T1.[ItemCode] 
        FROM tbl1 T1 
        WHERE T1.ItemCode in (' + @foo + ')' 
exec (@SQLString) 

Answer 2

我会用表变量：

DECLARE @foo AS NVARCHAR(max) = 'yourstring' 

DECLARE @SQLString table (name NVARCHAR(max)) 

    INSERT INTO @SQLString 
    SELECT T1.[ItemCode] 
    FROM tbl1 T1 
    WHERE T1.ItemCode LIKE ('%' + @foo + '%') 

SELECT * FROM @SQLString