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 0.08 - 0.01 and 0.08 + 0.01 and l_quantity < 25; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1469931.34..1469931.35 rows=1 width=8) (actual time=30760.321..30760.321 rows=1 loops=1) Buffers: shared hit=755215 read=276544 written=53 -> Bitmap Heap Scan on lineitem (cost=191054.28..1465937.76 rows=798715 width=8) (actual time=7839.598..30402.893 rows=794940 loops=1) Recheck Cond: ((l_shipdate >= '1997-01-01'::date) AND (l_shipdate < '1998-01-01'::date)) Filter: ((l_discount >= 0.07::double precision) AND (l_discount <= 0.09::double precision) AND (l_quantity < 25::double precision)) Rows Removed by Filter: 8316561 Buffers: shared hit=755215 read=276544 written=53 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..190854.60 rows=9120777 width=0) (actual time=7104.352..7104.352 rows=9138697 loops=1) Index Cond: ((l_shipdate >= '1997-01-01'::date) AND (l_shipdate < '1998-01-01'::date)) Buffers: shared hit=24679 read=195 written=12 Total runtime: 30776.680 ms (11 rows) COMMIT; COMMIT