BEGIN; BEGIN EXPLAIN (ANALYZE, BUFFERS) select sum(l_extendedprice * l_discount) as revenue from lineitem where l_shipdate >= date '1993-01-01' and l_shipdate < cast(date '1993-01-01' + 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=1466249.99..1466250.00 rows=1 width=8) (actual time=14522.309..14522.309 rows=1 loops=1) Buffers: shared hit=693574 read=337498 written=4 -> Bitmap Heap Scan on lineitem (cost=190793.13..1464352.97 rows=379403 width=8) (actual time=5025.212..14441.404 rows=381205 loops=1) Recheck Cond: ((l_shipdate >= '1993-01-01'::date) AND (l_shipdate < '1994-01-01'::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: 8738540 Heap Blocks: exact=1006178 Buffers: shared hit=693574 read=337498 written=4 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..190698.28 rows=9108971 width=0) (actual time=4488.367..4488.367 rows=9137198 loops=1) Index Cond: ((l_shipdate >= '1993-01-01'::date) AND (l_shipdate < '1994-01-01'::date)) Buffers: shared hit=7 read=24887 written=4 Planning time: 1.636 ms Execution time: 14530.861 ms (13 rows) COMMIT; COMMIT