Joel,
Ok, please try this:
ALTER TABLE tblresponseheader ALTER COLUMN clientnum SET STATISTICS 1000;
ALTER TABLE tblresponseheader ALTER COLUMN locationid SET STATISTICS 1000;
ALTER TABLE tbllocation ALTER COLUMN clientnum SET STATISTICS 1000;
ALTER TABLE tbllocation ALTER COLUMN divisionid SET STATISTICS 1000;
ALTER TABLE tbllocation ALTER COLUMN regionid SET STATISTICS 1000;
ANALYZE tblresponseheader;
ANALYZE tbllocation;
Then run the EXPLAIN ANALYZE again. (on Linux)
--
--Josh
Josh Berkus
Aglio Database Solutions
San Francisco