BEGIN; BEGIN EXPLAIN (ANALYZE, BUFFERS) select sum(l_extendedprice * l_discount) as revenue from lineitem where l_shipdate >= date '1995-01-01' and l_shipdate < cast(date '1995-01-01' + 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=1471812.94..1471812.95 rows=1 width=8) (actual time=16625.026..16625.026 rows=1 loops=1) Buffers: shared hit=838634 read=193445 written=1 -> Bitmap Heap Scan on lineitem (cost=192034.24..1467985.42 rows=765504 width=8) (actual time=4971.164..16449.876 rows=763058 loops=1) Recheck Cond: ((l_shipdate >= '1995-01-01'::date) AND (l_shipdate < '1996-01-01'::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: 8352326 Heap Blocks: exact=1007193 Buffers: shared hit=838634 read=193445 written=1 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..191842.86 rows=9168230 width=0) (actual time=4415.994..4415.994 rows=9142993 loops=1) Index Cond: ((l_shipdate >= '1995-01-01'::date) AND (l_shipdate < '1996-01-01'::date)) Buffers: shared hit=2 read=24884 Planning time: 1.891 ms Execution time: 16638.917 ms (13 rows) COMMIT; COMMIT