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 0.07 - 0.01 and 0.07 + 0.01 and l_quantity < 25; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1468827.81..1468827.82 rows=1 width=8) (actual time=14355.903..14355.903 rows=1 loops=1) Buffers: shared hit=267764 read=761308 written=3050 -> Bitmap Heap Scan on lineitem (cost=192206.78..1464816.39 rows=802285 width=8) (actual time=3198.476..14199.039 rows=795005 loops=1) Recheck Cond: ((l_shipdate >= '1995-01-01'::date) AND (l_shipdate < '1996-01-01'::date)) Filter: ((l_discount >= 0.06::double precision) AND (l_discount <= 0.08::double precision) AND (l_quantity < 25::double precision)) Rows Removed by Filter: 8320781 Buffers: shared hit=267764 read=761308 written=3050 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..192006.21 rows=9161538 width=0) (actual time=2844.948..2844.948 rows=9115786 loops=1) Index Cond: ((l_shipdate >= '1995-01-01'::date) AND (l_shipdate < '1996-01-01'::date)) Buffers: shared hit=8 read=24879 Total runtime: 14359.093 ms (11 rows) COMMIT; COMMIT