BEGIN; BEGIN EXPLAIN (ANALYZE, BUFFERS) select sum(l_extendedprice * l_discount) as revenue from lineitem where l_shipdate >= date '1996-01-01' and l_shipdate < cast(date '1996-01-01' + interval '1 year' as date) and l_discount between 0.06 - 0.01 and 0.06 + 0.01 and l_quantity < 24; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1471985.68..1471985.69 rows=1 width=8) (actual time=17129.393..17129.393 rows=1 loops=1) Buffers: shared hit=241176 read=790084 dirtied=286 written=64 -> Bitmap Heap Scan on lineitem (cost=192679.61..1468161.20 rows=764896 width=8) (actual time=6242.715..16968.410 rows=762868 loops=1) Recheck Cond: ((l_shipdate >= '1996-01-01'::date) AND (l_shipdate < '1997-01-01'::date)) Filter: ((l_discount >= 0.05::double precision) AND (l_discount <= 0.07::double precision) AND (l_quantity < 24::double precision)) Rows Removed by Filter: 8360567 Heap Blocks: exact=1006328 Buffers: shared hit=241176 read=790084 dirtied=286 written=64 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..192488.39 rows=9194382 width=0) (actual time=5730.573..5730.573 rows=9150505 loops=1) Index Cond: ((l_shipdate >= '1996-01-01'::date) AND (l_shipdate < '1997-01-01'::date)) Buffers: shared read=24932 Planning time: 1.324 ms Execution time: 17132.295 ms (13 rows) COMMIT; COMMIT