BEGIN; BEGIN EXPLAIN (ANALYZE, BUFFERS) select sum(l_extendedprice * l_discount) as revenue from lineitem where l_shipdate >= date '1997-01-01' and l_shipdate < cast(date '1997-01-01' + interval '1 year' as date) and l_discount between 0.07 - 0.01 and 0.07 + 0.01 and l_quantity < 25; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1486634.94..1486634.95 rows=1 width=8) (actual time=19780.199..19780.200 rows=1 loops=1) Buffers: shared hit=821812 read=220979 -> Bitmap Heap Scan on lineitem (cost=192864.02..1482583.96 rows=810196 width=8) (actual time=7684.431..19557.500 rows=795103 loops=1) Recheck Cond: ((l_shipdate >= '1997-01-01'::date) AND (l_shipdate < '1998-01-01'::date)) Filter: ((l_discount >= 0.06::double precision) AND (l_discount <= 0.08::double precision) AND (l_quantity < 25::double precision)) Rows Removed by Filter: 8318252 Buffers: shared hit=821812 read=220979 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..192661.47 rows=9259464 width=0) (actual time=7173.994..7173.994 rows=9239692 loops=1) Index Cond: ((l_shipdate >= '1997-01-01'::date) AND (l_shipdate < '1998-01-01'::date)) Buffers: shared read=24874 Total runtime: 19787.365 ms (11 rows) COMMIT; COMMIT