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 0.06 - 0.01 and 0.06 + 0.01 and l_quantity < 25; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1472127.26..1472127.27 rows=1 width=8) (actual time=29411.296..29411.296 rows=1 loops=1) Buffers: shared hit=745741 read=285181 written=14041 -> Bitmap Heap Scan on lineitem (cost=192671.61..1468128.50 rows=799753 width=8) (actual time=8972.057..29059.126 rows=793062 loops=1) Recheck Cond: ((l_shipdate >= '1994-01-01'::date) AND (l_shipdate < '1995-01-01'::date)) Filter: ((l_discount >= 0.05::double precision) AND (l_discount <= 0.07::double precision) AND (l_quantity < 25::double precision)) Rows Removed by Filter: 8305891 Buffers: shared hit=745741 read=285181 written=14041 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..192471.67 rows=9193284 width=0) (actual time=8323.619..8323.619 rows=9127701 loops=1) Index Cond: ((l_shipdate >= '1994-01-01'::date) AND (l_shipdate < '1995-01-01'::date)) Buffers: shared hit=1021 read=23845 Total runtime: 29430.462 ms (11 rows) COMMIT; COMMIT