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 < 24; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1470812.12..1470812.13 rows=1 width=8) (actual time=16994.837..16994.837 rows=1 loops=1) Buffers: shared hit=509846 read=523087 dirtied=600 written=5285 -> Bitmap Heap Scan on lineitem (cost=190991.12..1467003.39 rows=761746 width=8) (actual time=4454.657..16828.721 rows=760542 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 < 24::double precision)) Rows Removed by Filter: 8347419 Heap Blocks: exact=1008068 Buffers: shared hit=509846 read=523087 dirtied=600 written=5285 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..190800.68 rows=9123212 width=0) (actual time=3900.713..3900.713 rows=9144874 loops=1) Index Cond: ((l_shipdate >= '1994-01-01'::date) AND (l_shipdate < '1995-01-01'::date)) Buffers: shared hit=1 read=24864 written=1 Planning time: 1.764 ms Execution time: 17010.942 ms (13 rows) COMMIT; COMMIT