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 0.06 - 0.01 and 0.06 + 0.01 and l_quantity < 24; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1482624.15..1482624.16 rows=1 width=8) (actual time=18585.068..18585.068 rows=1 loops=1) Buffers: shared hit=846606 read=194491 written=1361 -> Bitmap Heap Scan on lineitem (cost=192135.94..1478753.04 rows=774222 width=8) (actual time=6497.716..18405.839 rows=762827 loops=1) Recheck Cond: ((l_shipdate >= '1995-01-01'::date) AND (l_shipdate < '1996-01-01'::date)) Filter: ((l_discount >= 0.05::double precision) AND (l_discount <= 0.07::double precision) AND (l_quantity < 24::double precision)) Rows Removed by Filter: 8350879 Heap Blocks: exact=1016211 Buffers: shared hit=846606 read=194491 written=1361 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..191942.39 rows=9215782 width=0) (actual time=5804.564..5804.564 rows=9224450 loops=1) Index Cond: ((l_shipdate >= '1995-01-01'::date) AND (l_shipdate < '1996-01-01'::date)) Buffers: shared hit=2 read=24884 written=9 Planning time: 1.767 ms Execution time: 18589.852 ms (13 rows) COMMIT; COMMIT