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 0.05 - 0.01 and 0.05 + 0.01 and l_quantity < 25; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1471851.55..1471851.56 rows=1 width=8) (actual time=68599.522..68599.523 rows=1 loops=1) Buffers: shared hit=452727 read=581368 written=43 -> Bitmap Heap Scan on lineitem (cost=190851.52..1467861.15 rows=798079 width=8) (actual time=8246.085..68192.501 rows=796446 loops=1) Recheck Cond: ((l_shipdate >= '1995-01-01'::date) AND (l_shipdate < '1996-01-01'::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: 8318684 Buffers: shared hit=452727 read=581368 written=43 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..190652.00 rows=9120517 width=0) (actual time=7502.747..7502.747 rows=9160946 loops=1) Index Cond: ((l_shipdate >= '1995-01-01'::date) AND (l_shipdate < '1996-01-01'::date)) Buffers: shared hit=24887 Total runtime: 68605.472 ms (11 rows) COMMIT; COMMIT