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 0.09 - 0.01 and 0.09 + 0.01 and l_quantity < 24; QUERY PLAN -------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Aggregate (cost=1484989.97..1484989.98 rows=1 width=8) (actual time=95698.062..95698.063 rows=1 loops=1) Buffers: shared hit=221731 read=821060 dirtied=58 written=23 -> Bitmap Heap Scan on lineitem (cost=193022.12..1483026.67 rows=392661 width=8) (actual time=11377.028..95409.375 rows=380247 loops=1) Recheck Cond: ((l_shipdate >= '1997-01-01'::date) AND (l_shipdate < '1998-01-01'::date)) Filter: ((l_discount >= 0.08::double precision) AND (l_discount <= 0.1::double precision) AND (l_quantity < 24::double precision)) Rows Removed by Filter: 8733108 Buffers: shared hit=221731 read=821060 dirtied=58 written=23 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..192923.96 rows=9272113 width=0) (actual time=10690.205..10690.205 rows=9239692 loops=1) Index Cond: ((l_shipdate >= '1997-01-01'::date) AND (l_shipdate < '1998-01-01'::date)) Buffers: shared hit=2 read=24872 Total runtime: 95713.192 ms (11 rows) COMMIT; COMMIT