BEGIN; BEGIN EXPLAIN (ANALYZE, BUFFERS) select sum(l_extendedprice * l_discount) as revenue from lineitem where l_shipdate >= date '1994-01-01' and l_shipdate < cast(date '1994-01-01' + 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=1472010.84..1472010.85 rows=1 width=8) (actual time=30708.940..30708.940 rows=1 loops=1) Buffers: shared hit=771482 read=260433 written=362 -> Bitmap Heap Scan on lineitem (cost=192132.22..1468181.57 rows=765855 width=8) (actual time=9316.765..30344.232 rows=761091 loops=1) Recheck Cond: ((l_shipdate >= '1994-01-01'::date) AND (l_shipdate < '1995-01-01'::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: 8346861 Buffers: shared hit=771482 read=260433 written=362 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..191940.76 rows=9172593 width=0) (actual time=8616.190..8616.190 rows=9135631 loops=1) Index Cond: ((l_shipdate >= '1994-01-01'::date) AND (l_shipdate < '1995-01-01'::date)) Buffers: shared hit=152 read=24714 written=303 Total runtime: 30718.828 ms (11 rows) COMMIT; COMMIT