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 0.08 - 0.01 and 0.08 + 0.01 and l_quantity < 24; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1467962.21..1467962.22 rows=1 width=8) (actual time=23374.584..23374.584 rows=1 loops=1) Buffers: shared hit=692861 read=336049 written=21028 -> Bitmap Heap Scan on lineitem (cost=191874.70..1464135.96 rows=765249 width=8) (actual time=7182.662..23109.356 rows=760329 loops=1) Recheck Cond: ((l_shipdate >= '1994-01-01'::date) AND (l_shipdate < '1995-01-01'::date)) Filter: ((l_discount >= 0.07::double precision) AND (l_discount <= 0.09::double precision) AND (l_quantity < 24::double precision)) Rows Removed by Filter: 8338616 Buffers: shared hit=692861 read=336049 written=21028 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..191683.39 rows=9146056 width=0) (actual time=6579.194..6579.194 rows=9108147 loops=1) Index Cond: ((l_shipdate >= '1994-01-01'::date) AND (l_shipdate < '1995-01-01'::date)) Buffers: shared hit=6146 read=18720 Total runtime: 23385.908 ms (11 rows) COMMIT; COMMIT