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 0.09 - 0.01 and 0.09 + 0.01 and l_quantity < 25; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1469461.00..1469461.01 rows=1 width=8) (actual time=26213.151..26213.152 rows=1 loops=1) Buffers: shared hit=62609 read=970481 written=1601 -> Bitmap Heap Scan on lineitem (cost=191174.32..1467474.73 rows=397255 width=8) (actual time=7399.044..26028.407 rows=396935 loops=1) Recheck Cond: ((l_shipdate >= '1995-01-01'::date) AND (l_shipdate < '1996-01-01'::date)) Filter: ((l_discount >= 0.08::double precision) AND (l_discount <= 0.1::double precision) AND (l_quantity < 25::double precision)) Rows Removed by Filter: 8718308 Buffers: shared hit=62609 read=970481 written=1601 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..191075.01 rows=9136018 width=0) (actual time=6852.976..6852.976 rows=9151916 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: 26217.852 ms (11 rows) COMMIT; COMMIT