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 0.05 - 0.01 and 0.05 + 0.01 and l_quantity < 25; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1474269.91..1474269.92 rows=1 width=8) (actual time=88351.023..88351.023 rows=1 loops=1) Buffers: shared hit=252753 read=782174 written=23055 -> Bitmap Heap Scan on lineitem (cost=191448.89..1470264.96 rows=800990 width=8) (actual time=10034.221..87897.670 rows=793833 loops=1) Recheck Cond: ((l_shipdate >= '1994-01-01'::date) AND (l_shipdate < '1995-01-01'::date)) Filter: ((l_discount >= 0.04::double precision) AND (l_discount <= 0.06::double precision) AND (l_quantity < 25::double precision)) Rows Removed by Filter: 8314320 Buffers: shared hit=252753 read=782174 written=23055 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..191248.64 rows=9153781 width=0) (actual time=9446.198..9446.198 rows=9163162 loops=1) Index Cond: ((l_shipdate >= '1994-01-01'::date) AND (l_shipdate < '1995-01-01'::date)) Buffers: shared read=24866 Total runtime: 88358.124 ms (11 rows) COMMIT; COMMIT