QUERY PLAN "Seq Scan on tblcase (cost=0.00..30066.21 rows=37401 width=996) (actual time=0.344..962.260 rows=22636 loops=1)" " Filter: ((clientnum)::text = 'SAKS'::text)" "Total runtime: 1034.434 ms"
That's only 1 second - to return 22,636 rows. Not 27 seconds, as in the original post. You'll never persuade PG to use the index when some 75% of your rows match the filter - it just doesn't make sense.
-- Richard Huxton Archonet Ltd
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