SQL查询来查找记录无法在其他表

Question

我有一个表plist与列list，其中包含逗号分隔的ID（1,2,3,4）。我想要那些id不在逗号分隔列表中的成员的记录。

Answer 1

，最好的办法是将逗号分隔列表分裂成一个表，然后搜索反对。

这里是分割字符串代码：

DECLARE @YourTable table (RowID int, Layout varchar(200)) 
INSERT @YourTable VALUES (1,'1,2,3,4') 

;WITH SplitSting AS 
(
    SELECT 
     RowID,LEFT(Layout,CHARINDEX(',',Layout)-1) AS Part 
      ,RIGHT(Layout,LEN(Layout)-CHARINDEX(',',Layout)) AS Remainder 
     FROM @YourTable 
     WHERE Layout IS NOT NULL AND CHARINDEX(',',Layout)>0 
    UNION ALL 
    SELECT 
     RowID,LEFT(Remainder,CHARINDEX(',',Remainder)-1) 
      ,RIGHT(Remainder,LEN(Remainder)-CHARINDEX(',',Remainder)) 
     FROM SplitSting 
     WHERE Remainder IS NOT NULL AND CHARINDEX(',',Remainder)>0 
    UNION ALL 
    SELECT 
     RowID,Remainder,null 
     FROM SplitSting 
     WHERE Remainder IS NOT NULL AND CHARINDEX(',',Remainder)=0 
) 
SELECT RowID,part FROM SplitSting ORDER BY RowID