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 0.09 - 0.01 and 0.09 + 0.01 and l_quantity < 24; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1471697.49..1471697.50 rows=1 width=8) (actual time=17203.192..17203.193 rows=1 loops=1) Buffers: shared hit=556417 read=478341 dirtied=375 written=162 -> Bitmap Heap Scan on lineitem (cost=191162.19..1469790.30 rows=381437 width=8) (actual time=4341.985..17106.473 rows=380145 loops=1) Recheck Cond: ((l_shipdate >= '1997-01-01'::date) AND (l_shipdate < '1998-01-01'::date)) Filter: ((l_discount >= 0.08::double precision) AND (l_discount <= 0.1::double precision) AND (l_quantity < 24::double precision)) Rows Removed by Filter: 8731541 Heap Blocks: exact=1009885 Buffers: shared hit=556417 read=478341 dirtied=375 written=162 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..191066.84 rows=9145427 width=0) (actual time=3903.217..3903.217 rows=9165980 loops=1) Index Cond: ((l_shipdate >= '1997-01-01'::date) AND (l_shipdate < '1998-01-01'::date)) Buffers: shared hit=2 read=24871 written=10 Planning time: 2.847 ms Execution time: 17207.071 ms (13 rows) COMMIT; COMMIT