Question

由于数据库设计，我必须在一个语句中执行两个更新查询。我试过这样做并在网上查看这些例子，但无济于事。我正在使用SQL Server 2014，而且我正在使用ASP.NET MVC项目的查询。

update [sip].[StudentJournalDate] sjd 
inner join [sip].[StudentJournal] sj on sjd.AdminNo = sj.AdminNo
set  sj.WeekNo = @WeekNo,
     sjd.WeekNo = @WeekNo,
     sj.StartDateEntry = @StartDate,
     sjd,StartDateEntry = @StartDate,
     sjd.LastUpdatedBy = @LastUpdatedBy,
     sjd.LastUpdatedDate = @LastUpdatedDate,
     sjd.EndDateEntry = @EndDate 
where
    AdminNo = @AdminNo";

Answer 1

你应该逐个更新

/*Update StudentJournalDate table*/
UPDATE [sip].[StudentJournalDate]   
SET WeekNo = @WeekNo,
 StartDateEntry = @StartDate,
 LastUpdatedBy = @LastUpdatedBy,
 LastUpdatedDate = @LastUpdatedDate,
 EndDateEntry = @EndDate 
WHERE
AdminNo = @AdminNo


/*Update StudentJournal table*/
UPDATE [sip].[StudentJournal]  
SET WeekNo = @WeekNo,
 StartDateEntry = @StartDate
WHERE AdminNo = @AdminNo

Answer 2

Juan是正确的你可能想把它分成两个单独的更新语句。您可以为StudentJournal创建一个更新，并为StudentJournalDate创建一个更新。

>>> import multiprocess as mp
>>> p = mp.Pool()
>>> p.map(lambda x:x**2, range(4))
[0, 1, 4, 9]
>>>

使用一个更新语句运行两个查询

2 个答案: