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 < 25; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1467937.59..1467937.60 rows=1 width=8) (actual time=16159.836..16159.836 rows=1 loops=1) Buffers: shared hit=527628 read=503632 written=42 -> Bitmap Heap Scan on lineitem (cost=191563.70..1465946.77 rows=398163 width=8) (actual time=4660.535..16064.166 rows=398132 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 < 25::double precision)) Rows Removed by Filter: 8734506 Heap Blocks: exact=1006328 Buffers: shared hit=527628 read=503632 written=42 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..191464.15 rows=9145559 width=0) (actual time=4167.632..4167.632 rows=9150505 loops=1) Index Cond: ((l_shipdate >= '1996-01-01'::date) AND (l_shipdate < '1997-01-01'::date)) Buffers: shared hit=1 read=24931 Planning time: 2.358 ms Execution time: 16170.025 ms (13 rows) COMMIT; COMMIT