BEGIN; BEGIN EXPLAIN (ANALYZE, BUFFERS) select sum(l_extendedprice * l_discount) as revenue from lineitem where l_shipdate >= date '1994-01-01' and l_shipdate < cast(date '1994-01-01' + interval '1 year' as date) and l_discount between 0.04 - 0.01 and 0.04 + 0.01 and l_quantity < 24; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1467427.56..1467427.57 rows=1 width=8) (actual time=17863.857..17863.857 rows=1 loops=1) Buffers: shared hit=587126 read=444788 written=30 -> Bitmap Heap Scan on lineitem (cost=190803.75..1465536.12 rows=378288 width=8) (actual time=4472.847..17747.283 rows=380491 loops=1) Recheck Cond: ((l_shipdate >= '1994-01-01'::date) AND (l_shipdate < '1995-01-01'::date)) Filter: ((l_discount >= 0.03::double precision) AND (l_discount <= 0.05::double precision) AND (l_quantity < 24::double precision)) Rows Removed by Filter: 8727461 Heap Blocks: exact=1007049 Buffers: shared hit=587126 read=444788 written=30 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..190709.17 rows=9114061 width=0) (actual time=3944.570..3944.570 rows=9135631 loops=1) Index Cond: ((l_shipdate >= '1994-01-01'::date) AND (l_shipdate < '1995-01-01'::date)) Buffers: shared read=24865 written=8 Planning time: 1.879 ms Execution time: 17879.148 ms (13 rows) COMMIT; COMMIT