sql - 自引用表 - 如何将结果作为一张表

Question

我有一张这样的桌子

请原谅它们由内部标准驱动的列名。我想知道的是如何查询这个自引用表，所以输出是这样的：

| PARENT REASON |    CHILD REASON  |
| ---------------------------------|
| Electrical    | Wire Broke       |
| Electrical    | Fuse Blown       |
| Mechanical    | Bad Gear         |
| Mechanical    | Bolt Broke       |

非常感谢您的帮助。

Answer 1

SELECT T2.strReason as [PARENT REASON], T1.strReason as [CHILD REASON]
FROM IngTable as T1
JOIN IngTable as T2
  ON T1.IngReasonParent = T2.IngReason

Answer 2

我相信你应该把它分成一个类别表，但是......

SELECT SELECT a.strReason as [PARENT REASON], b.strReason as [CHILD REASON]
FROM table1 AS a 
INNER JOIN table1 as b ON b.lngReasonParent = a.lngReason