BEGIN; BEGIN EXPLAIN (ANALYZE, BUFFERS) select sum(l_extendedprice * l_discount) as revenue from lineitem where l_shipdate >= date '1995-01-01' and l_shipdate < cast(date '1995-01-01' + interval '1 year' as date) and l_discount between 0.02 - 0.01 and 0.02 + 0.01 and l_quantity < 25; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1478726.78..1478726.79 rows=1 width=8) (actual time=46640.257..46640.257 rows=1 loops=1) Buffers: shared hit=720605 read=318492 dirtied=222 written=61 -> Bitmap Heap Scan on lineitem (cost=191336.97..1474723.40 rows=800676 width=8) (actual time=10568.858..46236.506 rows=794339 loops=1) Recheck Cond: ((l_shipdate >= '1995-01-01'::date) AND (l_shipdate < '1996-01-01'::date)) Filter: ((l_discount >= 0.01::double precision) AND (l_discount <= 0.03::double precision) AND (l_quantity < 25::double precision)) Rows Removed by Filter: 8319797 Buffers: shared hit=720605 read=318492 dirtied=222 written=61 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..191136.80 rows=9167397 width=0) (actual time=9766.133..9766.133 rows=9206188 loops=1) Index Cond: ((l_shipdate >= '1995-01-01'::date) AND (l_shipdate < '1996-01-01'::date)) Buffers: shared hit=3 read=24884 written=30 Total runtime: 46646.443 ms (11 rows) COMMIT; COMMIT