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 0.04 - 0.01 and 0.04 + 0.01 and l_quantity < 24; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1476870.79..1476870.80 rows=1 width=8) (actual time=16783.721..16783.721 rows=1 loops=1) Buffers: shared hit=612664 read=425586 dirtied=255 written=375 -> Bitmap Heap Scan on lineitem (cost=191963.07..1474961.95 rows=381768 width=8) (actual time=4706.749..16693.212 rows=381717 loops=1) Recheck Cond: ((l_shipdate >= '1996-01-01'::date) AND (l_shipdate < '1997-01-01'::date)) Filter: ((l_discount >= 0.03::double precision) AND (l_discount <= 0.05::double precision) AND (l_quantity < 24::double precision)) Rows Removed by Filter: 8750582 Heap Blocks: exact=1013318 Buffers: shared hit=612664 read=425586 dirtied=255 written=375 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..191867.62 rows=9197906 width=0) (actual time=4202.319..4202.319 rows=9214061 loops=1) Index Cond: ((l_shipdate >= '1996-01-01'::date) AND (l_shipdate < '1997-01-01'::date)) Buffers: shared read=24932 written=46 Planning time: 2.203 ms Execution time: 16794.667 ms (13 rows) COMMIT; COMMIT