SQL查询基于相同表列的一行的两个值

Question

我有一列报告中的一行，我希望它基于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表中，它类似于：

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

SubReason列是新添加的，当前的SQL查询类似于：

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

现在我想在SubReason的SELECT语句中添加一个列，如果*SR*在值中，则应该是值。但是这不起作用，因为它在值中也有'XX'，当前WHERE子句将其省略。

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