BEGIN; BEGIN EXPLAIN (ANALYZE, BUFFERS) select sum(l_extendedprice * l_discount) as revenue from lineitem where l_shipdate >= date '1993-01-01' and l_shipdate < cast(date '1993-01-01' + interval '1 year' as date) and l_discount between 0.05 - 0.01 and 0.05 + 0.01 and l_quantity < 24; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1476435.33..1476435.34 rows=1 width=8) (actual time=15016.202..15016.203 rows=1 loops=1) Buffers: shared hit=480533 read=556526 written=189 -> Bitmap Heap Scan on lineitem (cost=191433.72..1472582.91 rows=770484 width=8) (actual time=4067.614..14859.509 rows=763284 loops=1) Recheck Cond: ((l_shipdate >= '1993-01-01'::date) AND (l_shipdate < '1994-01-01'::date)) Filter: ((l_discount >= 0.04::double precision) AND (l_discount <= 0.06::double precision) AND (l_quantity < 24::double precision)) Rows Removed by Filter: 8356968 Heap Blocks: exact=1012165 Buffers: shared hit=480533 read=556526 written=189 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..191241.10 rows=9163253 width=0) (actual time=3586.134..3586.134 rows=9191860 loops=1) Index Cond: ((l_shipdate >= '1993-01-01'::date) AND (l_shipdate < '1994-01-01'::date)) Buffers: shared read=24894 written=19 Planning time: 2.092 ms Execution time: 15025.337 ms (13 rows) COMMIT; COMMIT