我有一个表“工作”,其中列(JobID,时间,DrvNo ...)。 我得到了另一个表“JobDetails”(JobFK,PkSequence,IsDestination,PC)。 Jobs和JobDetails之间有一对多的关系。从另一个(一对多关系)INSERT到TABLE
Data in Jobs is as follows:
Jobs
==================
JobID, Time, DrvNO
==================
1, 12:30, 123
2, 13:50, 343
3, 14:00, 234
Data in JobDetails as follows:
JobDetails
==============================================
JobFK, PkSequence, IsDestination, PC
==============================================
1, 0, 0, AB1
1, 1, 1, DE1
2, 0, 0, RT1
2, 1, 0, DS1
2, 2, 1, KJ1
3, 0, 0, YU7
3, 1, 1, TH1
我所试图做的是在乔布斯将两列,并试图通过获得来自JobDetails的皮卡和目标来填充乔布斯这两个表合并;像下面这样:
Jobs
==================
JobID, Time, DrvNO, Pickup, Dropoff
==================
1, 12:30, 123, AB1, DE1
2, 13:50, 343, RT1, KJ1
3, 14:00, 234, YU7, TH1
我所取得的这SELECT部分,具体如下:
SELECT cj.JobID, cj.Time,cj.DrvNo, j.PC AS Pickup, k.PC AS Dropoff
FROM Jobs AS cj
LEFT JOIN JobDetails AS j ON (cj.JobID = j.JobFK AND j.PKSequence = 0)
LEFT JOIN JobDetails AS k ON (cj.JobID = k.JobFK AND k.IsDestination= 1)
以上SELECT工作正常,但如何插入/更新现有的表(职位)与数据从这个查询?
任何帮助表示赞赏。 谢谢
这行怎么样 - '2,1,0,DS1'?你想消除它? –
是的,它被忽略。因为我们只对2件事感兴趣,所以PKSequence = 0(作为Pickup)或IsDestination = 1(作为Dropoff)。 – user1001493