Question

我有两个表，一个是example 1: input [user_id = 1, user_id = 2] output => 55,66 example 2: input [user_id = 1, user_id = 3] output => 44,55,66 example 3: input [user_id = 1, user_id = 4] output => null，另一个是CurrentReport表，另一个是表中显示的当前报告表。我复制currentReport表的以下列的值

Challan

但是现在我想将具有最小日期的challan表的stepno复制到两个表中的currentreport表的work1中。是一样的在challan表中，challan表中有多个enteries，具有相同的引用号，其中我想获得具有最小日期的stepno。

[Title], [ISBN], [Author1], [FinalStatus], [MssType]表中的列是

challan

[ChallanNo] ,[ReferenceNo] ,[PersonID] ,[PersonCategory] ,[ChallanDate] ,[PreparedBy] ,[CreatedOn] ,[Publisher] ,[TemplateName] ,[TemplateSubject] ,[TemplateBody] ,[EmailAttachment] ,[PreviousProjectedDate] ,[PreviousReminderDate] ,[PreviousActionDate] ,[NextProjectedDate] ,[NextReminderDate] ,[NextActionDate] ,[ReminderText] ,[ReceivedDate] ,[StepNo] ,[ChallanStatus] ,[IsActive] ,[IsReceived]表中的列是：

CurrentReport

所以请告诉我如何更新[ReferenceNo] ,[Title] ,[ISBN] ,[Author1] ,[FinalStatus] ,[MssType] ,[Work1] ,[GivenTo1] ,[ChallanDate1] ,[ReceivedDate1] ,[Work2] ,[GivenTo2] ,[ChallanDate2] ,[ReceivedDate2] ,[Work3] ,[GivenTo3] ,[ChallanDate3] ,[ReceivedDate3] ,[Work4] ,[GivenTo4] ,[ChallanDate4] ,[ReceivedDate4]表，因为它有200个条目，currentreport表有700个进入。

Answer 1

/ *检查这是否有效* / 第1步 - 写入select来过滤掉minDate -

http://www.therapy-directory.org.uk/therapists/lesley-lister?uqs=626693
http://www.therapy-directory.org.uk/therapists/fiona-jeffrey?uqs=626693
http://www.therapy-directory.org.uk/therapists/ann-grant?uqs=626693
.....
.....
http://www.therapy-directory.org.uk/therapists/jan-garbutt?uqs=626693

/ *如果以上工作正常* / 第2步 - 根据上述结果进行更新

SELECT c.ChallanNo, c.REFERENCENO , c.STEPNO FROM CHALLAN c
INNER JOIN CURRENTREPORT cr
on c.REFERENCENO = cr.REFERENCENO
WHERE RECEIVEDDATE IN (SELECT MIN(RECEIVEDDATE)
FROM CHALLAN cn
GROUP BY (STEPNO))

在sql中将特定数据从一个表复制到另一个表

1 个答案: