BEGIN; BEGIN EXPLAIN (ANALYZE, BUFFERS) select sum(l_extendedprice * l_discount) as revenue from lineitem where l_shipdate >= date '1995-01-01' and l_shipdate < cast(date '1995-01-01' + 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=1482624.15..1482624.16 rows=1 width=8) (actual time=15633.496..15633.497 rows=1 loops=1) Buffers: shared hit=572416 read=468681 dirtied=819 written=11764 -> Bitmap Heap Scan on lineitem (cost=192135.94..1478753.04 rows=774222 width=8) (actual time=4994.704..15474.891 rows=762023 loops=1) Recheck Cond: ((l_shipdate >= '1995-01-01'::date) AND (l_shipdate < '1996-01-01'::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: 8342363 Heap Blocks: exact=1016211 Buffers: shared hit=572416 read=468681 dirtied=819 written=11764 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..191942.39 rows=9215782 width=0) (actual time=4453.809..4453.809 rows=9225349 loops=1) Index Cond: ((l_shipdate >= '1995-01-01'::date) AND (l_shipdate < '1996-01-01'::date)) Buffers: shared hit=677 read=24209 written=270 Planning time: 2.258 ms Execution time: 15641.866 ms (13 rows) COMMIT; COMMIT