BEGIN; BEGIN EXPLAIN (ANALYZE, BUFFERS) select sum(l_extendedprice * l_discount) as revenue from lineitem where l_shipdate >= date '1993-01-01' and l_shipdate < cast(date '1993-01-01' + interval '1 year' as date) and l_discount between 0.05 - 0.01 and 0.05 + 0.01 and l_quantity < 24; QUERY PLAN -------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Aggregate (cost=1475192.95..1475192.96 rows=1 width=8) (actual time=57411.144..57411.144 rows=1 loops=1) Buffers: shared hit=721078 read=311998 written=7579 -> Bitmap Heap Scan on lineitem (cost=193077.52..1471324.35 rows=773720 width=8) (actual time=10792.095..57022.970 rows=763183 loops=1) Recheck Cond: ((l_shipdate >= '1993-01-01'::date) AND (l_shipdate < '1994-01-01'::date)) Filter: ((l_discount >= 0.04::double precision) AND (l_discount <= 0.06::double precision) AND (l_quantity < 24::double precision)) Rows Removed by Filter: 8356953 Buffers: shared hit=721078 read=311998 written=7579 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..192884.09 rows=9222526 width=0) (actual time=10219.885..10219.885 rows=9155599 loops=1) Index Cond: ((l_shipdate >= '1993-01-01'::date) AND (l_shipdate < '1994-01-01'::date)) Buffers: shared read=24895 Total runtime: 57417.350 ms (11 rows) COMMIT; COMMIT