> That second query may not be the best, as it will probably seqscan and
> grab all the pins before only returning the first one ...
A partial index where USED_BY is null would eliminate the need for the
seqscan on the table...
--
Scott Ribe
scott_ribe(at)killerbytes(dot)com
http://www.killerbytes.com/
(303) 722-0567 voice