Where聲明變量Sql Server

Question

聲明可以通過SQL Server 2008中聲明的變量傳遞Where語句嗎？我該如何做這樣的事情？

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

當我運行這段代碼我foo的變量可以容納至少一個項目或100個項目，一個依賴於另一個結果

Answer 1

您可以通過使用EXEC做到這一點。

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

我會用表變量：

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