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 0.07 - 0.01 and 0.07 + 0.01 and l_quantity < 24; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1469866.05..1469866.06 rows=1 width=8) (actual time=20807.305..20807.305 rows=1 loops=1) Buffers: shared hit=356729 read=674531 written=15182 -> Bitmap Heap Scan on lineitem (cost=191655.53..1466038.60 rows=765490 width=8) (actual time=6790.271..20635.084 rows=761717 loops=1) Recheck Cond: ((l_shipdate >= '1996-01-01'::date) AND (l_shipdate < '1997-01-01'::date)) Filter: ((l_discount >= 0.06::double precision) AND (l_discount <= 0.08::double precision) AND (l_quantity < 24::double precision)) Rows Removed by Filter: 8361718 Heap Blocks: exact=1006328 Buffers: shared hit=356729 read=674531 written=15182 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..191464.15 rows=9145559 width=0) (actual time=6107.520..6107.520 rows=9151909 loops=1) Index Cond: ((l_shipdate >= '1996-01-01'::date) AND (l_shipdate < '1997-01-01'::date)) Buffers: shared hit=1172 read=23760 written=281 Planning time: 2.000 ms Execution time: 20816.427 ms (13 rows) COMMIT; COMMIT