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=1485302.55..1485302.56 rows=1 width=8) (actual time=25160.747..25160.747 rows=1 loops=1) Buffers: shared hit=415250 read=627059 written=2470 -> Bitmap Heap Scan on lineitem (cost=193709.06..1483280.60 rows=404390 width=8) (actual time=8348.618..24978.311 rows=399184 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: 8733474 Buffers: shared hit=415250 read=627059 written=2470 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..193607.96 rows=9300113 width=0) (actual time=7681.737..7681.737 rows=9251311 loops=1) Index Cond: ((l_shipdate >= '1996-01-01'::date) AND (l_shipdate < '1997-01-01'::date)) Buffers: shared read=24933 Total runtime: 25172.411 ms (11 rows) COMMIT; COMMIT