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 0.08 - 0.01 and 0.08 + 0.01 and l_quantity < 25; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1469010.17..1469010.18 rows=1 width=8) (actual time=33577.297..33577.297 rows=1 loops=1) Buffers: shared hit=361178 read=670467 written=9653 -> Bitmap Heap Scan on lineitem (cost=190960.04..1465019.84 rows=798066 width=8) (actual time=8649.959..33196.586 rows=794986 loops=1) Recheck Cond: ((l_shipdate >= '1996-01-01'::date) AND (l_shipdate < '1997-01-01'::date)) Filter: ((l_discount >= 0.07::double precision) AND (l_discount <= 0.09::double precision) AND (l_quantity < 25::double precision)) Rows Removed by Filter: 8328449 Buffers: shared hit=361178 read=670467 written=9653 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..190760.52 rows=9113369 width=0) (actual time=8037.915..8037.915 rows=9156981 loops=1) Index Cond: ((l_shipdate >= '1996-01-01'::date) AND (l_shipdate < '1997-01-01'::date)) Buffers: shared hit=3212 read=21721 written=1748 Total runtime: 33586.790 ms (11 rows) COMMIT; COMMIT