SQL - Can I have a Group By clause after a nestled Select?

问题

For example:

Select max(date)
From table A
Where max(date) < any (select..


                      ...)

Group By Book_Name,Client_Name

So the max(date) field could be compared to the Nestled Select return, as if the grouping of the greater Select was already made.

回答1:

What you want is typically done with the HAVING clause.

Select Book_Name,Client_Name, max(date)
From table A
Group By Book_Name,Client_Name
HAVING max(date) < any (select..


                      ...)

I removed reference to the other answer. I don't think it was correct and doesn't really help because I think HAVING is what you need.

来源：https://stackoverflow.com/questions/30147349/sql-can-i-have-a-group-by-clause-after-a-nestled-select