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 0.03 - 0.01 and 0.03 + 0.01 and l_quantity < 25; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1484728.04..1484728.05 rows=1 width=8) (actual time=14374.515..14374.515 rows=1 loops=1) Buffers: shared hit=929348 read=111905 dirtied=423 written=951 -> Bitmap Heap Scan on lineitem (cost=193101.34..1480698.79 rows=805851 width=8) (actual time=4944.426..14220.314 rows=796897 loops=1) Recheck Cond: ((l_shipdate >= '1996-01-01'::date) AND (l_shipdate < '1997-01-01'::date)) Filter: ((l_discount >= 0.02::double precision) AND (l_discount <= 0.04::double precision) AND (l_quantity < 25::double precision)) Rows Removed by Filter: 8326624 Heap Blocks: exact=1016321 Buffers: shared hit=929348 read=111905 dirtied=423 written=951 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..192899.88 rows=9261531 width=0) (actual time=4484.491..4484.491 rows=9242220 loops=1) Index Cond: ((l_shipdate >= '1996-01-01'::date) AND (l_shipdate < '1997-01-01'::date)) Buffers: shared hit=558 read=24374 written=769 Planning time: 1.831 ms Execution time: 14383.558 ms (13 rows) COMMIT; COMMIT