* Lightware Software > Say I have the following table (TBL): > > KEY GRP VAL > 1 A 2 > 2 A 3 > 3 A 1 > > 4 B 2 > 5 B 1 > 6 B 3 > > "select KEY, max(VAL) from TBL group by GRP" gives: > > KEY max(VAL) > ------------ > 1 3 > 4 3 > > the desired result though is: > > KEY max(VAL) > ------------ > 2 3 > 6 3 > > any ideas on how to achieve this ?
There is a special page in the manual for this problem, one of my favorite sql hacks is the MAX-CONCAT trick: <URL: http://www.mysql.com/doc/en/example-Maximum-column-group-row.html > -- Roger -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
