BEGIN; BEGIN EXPLAIN (ANALYZE, BUFFERS) select sum(l_extendedprice * l_discount) as revenue from lineitem where l_shipdate >= date '1997-01-01' and l_shipdate < cast(date '1997-01-01' + interval '1 year' as date) and l_discount between 0.04 - 0.01 and 0.04 + 0.01 and l_quantity < 24; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1472151.34..1472151.35 rows=1 width=8) (actual time=26609.330..26609.331 rows=1 loops=1) Buffers: shared hit=301996 read=731765 written=862 -> Bitmap Heap Scan on lineitem (cost=191937.07..1470226.57 rows=384954 width=8) (actual time=7849.024..26425.910 rows=381038 loops=1) Recheck Cond: ((l_shipdate >= '1997-01-01'::date) AND (l_shipdate < '1998-01-01'::date)) Filter: ((l_discount >= 0.03::double precision) AND (l_discount <= 0.05::double precision) AND (l_quantity < 24::double precision)) Rows Removed by Filter: 8730411 Buffers: shared hit=301996 read=731765 written=862 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..191840.83 rows=9177400 width=0) (actual time=7246.618..7246.618 rows=9156668 loops=1) Index Cond: ((l_shipdate >= '1997-01-01'::date) AND (l_shipdate < '1998-01-01'::date)) Buffers: shared hit=2 read=24872 Total runtime: 26615.925 ms (11 rows) COMMIT; COMMIT