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 0.09 - 0.01 and 0.09 + 0.01 and l_quantity < 25; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1477189.36..1477189.37 rows=1 width=8) (actual time=14894.194..14894.195 rows=1 loops=1) Buffers: shared hit=779750 read=257492 written=619 -> Bitmap Heap Scan on lineitem (cost=192636.78..1475179.10 rows=402051 width=8) (actual time=4643.331..14802.167 rows=399139 loops=1) Recheck Cond: ((l_shipdate >= '1996-01-01'::date) AND (l_shipdate < '1997-01-01'::date)) Filter: ((l_discount >= 0.08::double precision) AND (l_discount <= 0.1::double precision) AND (l_quantity < 25::double precision)) Rows Removed by Filter: 8732995 Heap Blocks: exact=1012310 Buffers: shared hit=779750 read=257492 written=619 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..192536.27 rows=9225170 width=0) (actual time=4095.106..4095.106 rows=9204734 loops=1) Index Cond: ((l_shipdate >= '1996-01-01'::date) AND (l_shipdate < '1997-01-01'::date)) Buffers: shared hit=11 read=24921 written=235 Planning time: 2.027 ms Execution time: 14904.859 ms (13 rows) COMMIT; COMMIT