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 0.06 - 0.01 and 0.06 + 0.01 and l_quantity < 24; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1486000.81..1486000.82 rows=1 width=8) (actual time=18904.466..18904.467 rows=1 loops=1) Buffers: shared hit=372666 read=669642 dirtied=949 written=653 -> Bitmap Heap Scan on lineitem (cost=193189.50..1482106.50 rows=778862 width=8) (actual time=3872.196..18703.425 rows=763691 loops=1) Recheck Cond: ((l_shipdate >= '1996-01-01'::date) AND (l_shipdate < '1997-01-01'::date)) Filter: ((l_discount >= 0.05::double precision) AND (l_discount <= 0.07::double precision) AND (l_quantity < 24::double precision)) Rows Removed by Filter: 8368967 Heap Blocks: exact=1017376 Buffers: shared hit=372666 read=669642 dirtied=949 written=653 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..192994.79 rows=9271022 width=0) (actual time=3473.629..3473.629 rows=9251311 loops=1) Index Cond: ((l_shipdate >= '1996-01-01'::date) AND (l_shipdate < '1997-01-01'::date)) Buffers: shared read=24932 written=23 Planning time: 2.105 ms Execution time: 18908.521 ms (13 rows) COMMIT; COMMIT