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 0.06 - 0.01 and 0.06 + 0.01 and l_quantity < 25; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1467265.45..1467265.46 rows=1 width=8) (actual time=27405.808..27405.809 rows=1 loops=1) Buffers: shared hit=684820 read=344090 written=19785 -> Bitmap Heap Scan on lineitem (cost=191463.23..1463275.23 rows=798044 width=8) (actual time=8109.866..27067.959 rows=793054 loops=1) Recheck Cond: ((l_shipdate >= '1994-01-01'::date) AND (l_shipdate < '1995-01-01'::date)) Filter: ((l_discount >= 0.05::double precision) AND (l_discount <= 0.07::double precision) AND (l_quantity < 25::double precision)) Rows Removed by Filter: 8305891 Buffers: shared hit=684820 read=344090 written=19785 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..191263.72 rows=9126089 width=0) (actual time=7353.846..7353.846 rows=9108198 loops=1) Index Cond: ((l_shipdate >= '1994-01-01'::date) AND (l_shipdate < '1995-01-01'::date)) Buffers: shared hit=52 read=24814 Total runtime: 27412.127 ms (11 rows) COMMIT; COMMIT