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 0.07 - 0.01 and 0.07 + 0.01 and l_quantity < 25; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1476600.73..1476600.74 rows=1 width=8) (actual time=17264.530..17264.530 rows=1 loops=1) Buffers: shared hit=350498 read=686561 -> Bitmap Heap Scan on lineitem (cost=191441.59..1472590.78 rows=801989 width=8) (actual time=5222.913..17098.502 rows=796391 loops=1) Recheck Cond: ((l_shipdate >= '1993-01-01'::date) AND (l_shipdate < '1994-01-01'::date)) Filter: ((l_discount >= 0.06::double precision) AND (l_discount <= 0.08::double precision) AND (l_quantity < 25::double precision)) Rows Removed by Filter: 8315145 Heap Blocks: exact=1012165 Buffers: shared hit=350498 read=686561 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..191241.10 rows=9163253 width=0) (actual time=4712.789..4712.789 rows=9191860 loops=1) Index Cond: ((l_shipdate >= '1993-01-01'::date) AND (l_shipdate < '1994-01-01'::date)) Buffers: shared read=24894 Planning time: 1.521 ms Execution time: 17270.209 ms (13 rows) COMMIT; COMMIT