BEGIN; BEGIN EXPLAIN (ANALYZE, BUFFERS) select sum(l_extendedprice * l_discount) as revenue from lineitem where l_shipdate >= date '1995-01-01' and l_shipdate < cast(date '1995-01-01' + 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=1466969.27..1466969.28 rows=1 width=8) (actual time=27776.580..27776.580 rows=1 loops=1) Buffers: shared hit=796518 read=235562 written=56 -> Bitmap Heap Scan on lineitem (cost=189724.53..1463187.97 rows=756259 width=8) (actual time=9225.649..27442.462 rows=761858 loops=1) Recheck Cond: ((l_shipdate >= '1995-01-01'::date) AND (l_shipdate < '1996-01-01'::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: 8353526 Buffers: shared hit=796518 read=235562 written=56 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..189535.47 rows=9057664 width=0) (actual time=8630.414..8630.414 rows=9142993 loops=1) Index Cond: ((l_shipdate >= '1995-01-01'::date) AND (l_shipdate < '1996-01-01'::date)) Buffers: shared hit=283 read=24604 written=54 Total runtime: 27790.397 ms (11 rows) COMMIT; COMMIT