Francesc Leveque <[EMAIL PROTECTED]> writes:
> Is correct to do something like?:

> SELECT row1,row2 FROM mytable
> WHERE (row1,row3) IN
> (SELECT row1 as p1,MAX(row3) as p2 FROM mytable
> WHERE row3 <= current_date
> GROUP BY row1)

Sure.

> I mean, I don't see documentation about subselects returning more than 
> one column, but it seems to work...

http://www.postgresql.org/docs/7.4/static/functions-subquery.html#AEN12497

                        regards, tom lane

---------------------------(end of broadcast)---------------------------
TIP 4: Don't 'kill -9' the postmaster

Reply via email to