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 0.05 - 0.01 and 0.05 + 0.01 and l_quantity < 25; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1483366.46..1483366.47 rows=1 width=8) (actual time=17490.012..17490.013 rows=1 loops=1) Buffers: shared hit=460468 read=580318 written=432 -> Bitmap Heap Scan on lineitem (cost=192434.55..1479367.10 rows=799873 width=8) (actual time=5104.924..17321.056 rows=796600 loops=1) Recheck Cond: ((l_shipdate >= '1997-01-01'::date) AND (l_shipdate < '1998-01-01'::date)) Filter: ((l_discount >= 0.04::double precision) AND (l_discount <= 0.06::double precision) AND (l_quantity < 25::double precision)) Rows Removed by Filter: 8316565 Heap Blocks: exact=1015913 Buffers: shared hit=460468 read=580318 written=432 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..192234.59 rows=9229802 width=0) (actual time=4553.476..4553.476 rows=9221157 loops=1) Index Cond: ((l_shipdate >= '1997-01-01'::date) AND (l_shipdate < '1998-01-01'::date)) Buffers: shared hit=2 read=24871 written=18 Planning time: 1.772 ms Execution time: 17497.462 ms (13 rows) COMMIT; COMMIT