基于同一表列的一行的两个值的SQL查询

Question

我有两列的一行报告，我想基于SQL表中的同一列。

例如，在报告中，应该是这样的：

ID | Reason  | SubReason 
1 | Did not like | Appearance 

在SQL表是这样的：

ID | ReturnReason 
1 | Did not like 
1 | XX*SR*Appearance 
1 | XX - TestData 
1 | XX - TestData2 

被新加入的SubReason柱和电流SQL查询是这样的：

SELECT ID, ReturnReason AS 'Reason' 
FROM table 
WHERE LEFT(ReturnReason,2) NOT IN ('XX') 

而现在我会喜欢e在SubReason的SELECT语句中添加一列，如果*SR*在该值中，则该值应为该值。然而，这将不起作用，因为它的值中还有'XX'，该值在当前的WHERE子句中被省略。

Answer 1

SELECT t.ID, t.ReturnReason AS 'Reason', 
SUBSTRING(t1.ReturnReason,7,10000) as 'SubReason ' 
FROM t 
LEFT JOIN t as t1 on t.id=t1.id and t1.ReturnReason LIKE 'XX*SR*%' 
WHERE t.ReturnReason NOT LIKE 'XX%' 

SQLFiddle demo