BEGIN; BEGIN EXPLAIN (ANALYZE, BUFFERS) select sum(l_extendedprice * l_discount) as revenue from lineitem where l_shipdate >= date '1996-01-01' and l_shipdate < cast(date '1996-01-01' + interval '1 year' as date) and l_discount between 0.05 - 0.01 and 0.05 + 0.01 and l_quantity < 25; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1471199.87..1471199.88 rows=1 width=8) (actual time=29643.848..29643.848 rows=1 loops=1) Buffers: shared hit=124967 read=908296 dirtied=936 written=1097 -> Bitmap Heap Scan on lineitem (cost=191106.61..1467229.45 rows=794085 width=8) (actual time=7468.584..29313.685 rows=796594 loops=1) Recheck Cond: ((l_shipdate >= '1996-01-01'::date) AND (l_shipdate < '1997-01-01'::date)) Filter: ((l_discount >= 0.04::double precision) AND (l_discount <= 0.06::double precision) AND (l_quantity < 25::double precision)) Rows Removed by Filter: 8335606 Buffers: shared hit=124967 read=908296 dirtied=936 written=1097 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..190908.09 rows=9128126 width=0) (actual time=6747.753..6747.753 rows=9168339 loops=1) Index Cond: ((l_shipdate >= '1996-01-01'::date) AND (l_shipdate < '1997-01-01'::date)) Buffers: shared hit=6 read=24927 Total runtime: 29652.582 ms (11 rows) COMMIT; COMMIT