BEGIN; BEGIN EXPLAIN (ANALYZE, BUFFERS) select sum(l_extendedprice * l_discount) as revenue from lineitem where l_shipdate >= date '1996-01-01' and l_shipdate < cast(date '1996-01-01' + interval '1 year' as date) and l_discount between 0.02 - 0.01 and 0.02 + 0.01 and l_quantity < 25; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1475508.68..1475508.69 rows=1 width=8) (actual time=38436.754..38436.754 rows=1 loops=1) Buffers: shared hit=692985 read=339278 written=1980 -> Bitmap Heap Scan on lineitem (cost=193722.35..1471472.15 rows=807307 width=8) (actual time=10515.563..38063.047 rows=798550 loops=1) Recheck Cond: ((l_shipdate >= '1996-01-01'::date) AND (l_shipdate < '1997-01-01'::date)) Filter: ((l_discount >= 0.01::double precision) AND (l_discount <= 0.03::double precision) AND (l_quantity < 25::double precision)) Rows Removed by Filter: 8333695 Buffers: shared hit=692985 read=339278 written=1980 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..193520.52 rows=9248169 width=0) (actual time=9790.354..9790.354 rows=9159315 loops=1) Index Cond: ((l_shipdate >= '1996-01-01'::date) AND (l_shipdate < '1997-01-01'::date)) Buffers: shared hit=1118 read=23815 written=1937 Total runtime: 38460.684 ms (11 rows) COMMIT; COMMIT