如何在SQL Server的跟踪表中查找丢失的记录？

Question

我有2张桌子，如下所示

workitem

workId WorkName Status
1      xyz      16
2      abc      16
3      mnc      16

WorkItemTrack
TrackID  workId   Status
1        1        3
2        1        5
3        1        9
4        2        5
5        2        9
6        3        3 
7        3        9

对于WorkItemTrack表中的每个“ workId”，状态应设置为3,5＆9。在上述情况下，对于workId 2和3，分别缺少“状态” 3和5。

在上面的“ workId” 2和3的WorkItemTrack表中，状态3和5分别丢失。 在上述情况下如何找到这2条记录

Answer 1

这应该做到。

Select * FROM WorkItem 
WHERE WorkID Not in 
(
  SELECT Distinct WIT.WorkID 
  FROM WorkItemTrack WIT
       JOIN WorkItemTrack WIT1 ON (WIT.WorkID = WIT1.WorkID) AND (WIT1.Status=5)
       JOIN WorkItemTrack WIT2 ON (WIT.WorkID = WIT2.WorkID) AND (WIT1.Status=9)
  WHERE WIT.Status=3
)