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 0.08 - 0.01 and 0.08 + 0.01 and l_quantity < 24; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1471449.08..1471449.09 rows=1 width=8) (actual time=22160.620..22160.621 rows=1 loops=1) Buffers: shared hit=317259 read=714804 written=74 -> Bitmap Heap Scan on lineitem (cost=191850.80..1467597.43 rows=770330 width=8) (actual time=7531.991..21932.261 rows=764257 loops=1) Recheck Cond: ((l_shipdate >= '1993-01-01'::date) AND (l_shipdate < '1994-01-01'::date)) Filter: ((l_discount >= 0.07::double precision) AND (l_discount <= 0.09::double precision) AND (l_quantity < 24::double precision)) Rows Removed by Filter: 8355287 Buffers: shared hit=317259 read=714804 written=74 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..191658.22 rows=9159139 width=0) (actual time=6963.225..6963.225 rows=9146201 loops=1) Index Cond: ((l_shipdate >= '1993-01-01'::date) AND (l_shipdate < '1994-01-01'::date)) Buffers: shared read=24895 Total runtime: 22166.949 ms (11 rows) COMMIT; COMMIT