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 0.04 - 0.01 and 0.04 + 0.01 and l_quantity < 25; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1462697.48..1462697.49 rows=1 width=8) (actual time=33077.574..33077.574 rows=1 loops=1) Buffers: shared hit=599866 read=429206 written=20123 -> Bitmap Heap Scan on lineitem (cost=190184.25..1460732.36 rows=393024 width=8) (actual time=10083.842..32873.906 rows=398309 loops=1) Recheck Cond: ((l_shipdate >= '1995-01-01'::date) AND (l_shipdate < '1996-01-01'::date)) Filter: ((l_discount >= 0.03::double precision) AND (l_discount <= 0.05::double precision) AND (l_quantity < 25::double precision)) Rows Removed by Filter: 8708393 Buffers: shared hit=599866 read=429206 written=20123 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..190085.99 rows=9069916 width=0) (actual time=9370.281..9370.281 rows=9115888 loops=1) Index Cond: ((l_shipdate >= '1995-01-01'::date) AND (l_shipdate < '1996-01-01'::date)) Buffers: shared hit=104 read=24783 Total runtime: 33099.987 ms (11 rows) COMMIT; COMMIT