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 0.07 - 0.01 and 0.07 + 0.01 and l_quantity < 24; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1476188.98..1476188.99 rows=1 width=8) (actual time=19064.459..19064.459 rows=1 loops=1) Buffers: shared hit=699899 read=332871 dirtied=898 written=1956 -> Bitmap Heap Scan on lineitem (cost=193561.96..1472338.96 rows=770004 width=8) (actual time=5775.120..18878.209 rows=761824 loops=1) Recheck Cond: ((l_shipdate >= '1997-01-01'::date) AND (l_shipdate < '1998-01-01'::date)) Filter: ((l_discount >= 0.06::double precision) AND (l_discount <= 0.08::double precision) AND (l_quantity < 24::double precision)) Rows Removed by Filter: 8349678 Heap Blocks: exact=1007897 Buffers: shared hit=699899 read=332871 dirtied=898 written=1956 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..193369.46 rows=9246089 width=0) (actual time=5177.881..5177.881 rows=9147731 loops=1) Index Cond: ((l_shipdate >= '1997-01-01'::date) AND (l_shipdate < '1998-01-01'::date)) Buffers: shared read=24873 written=1 Planning time: 2.023 ms Execution time: 19071.542 ms (13 rows) COMMIT; COMMIT