|  | Posted by Ed Murphy on 02/22/07 17:01 
Mark Probert wrote:
 > There is a table that contains the following:
 >
 > aID    bID     cID    dID
 > --------------------------
 > 6	9	28	1
 > 6	2	28	2
 > 6	11	28	3
 > 6	1	27	5
 > 6	9	27	5
 > 6	11	27	5
 >
 > I am trying to get a result of:
 >
 > aID    bID     cID    dID
 > --------------------------
 > 6	9	28	1
 > 6	2	28	2
 > 6	11	28	3
 > 6	1	27	5
 >
 > So, something like "the set off all values over bID which have the
 > greatest cID".  Any ideas?
 
 select t.aID, t.bID, t.cID, t.dID
 from the_table t
 join (
 select bID, max(cID) max_cID
 from the_table
 group by bID
 ) s on t.bID = s.bID and t.cID = s.max_cID
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