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 0.09 - 0.01 and 0.09 + 0.01 and l_quantity < 25; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1472901.07..1472901.08 rows=1 width=8) (actual time=30203.188..30203.188 rows=1 loops=1) Buffers: shared hit=541148 read=492915 written=60 -> Bitmap Heap Scan on lineitem (cost=192249.47..1470869.90 rows=406235 width=8) (actual time=8321.149..30004.230 rows=397897 loops=1) Recheck Cond: ((l_shipdate >= '1993-01-01'::date) AND (l_shipdate < '1994-01-01'::date)) Filter: ((l_discount >= 0.08::double precision) AND (l_discount <= 0.1::double precision) AND (l_quantity < 25::double precision)) Rows Removed by Filter: 8722216 Buffers: shared hit=541148 read=492915 written=60 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..192147.91 rows=9192108 width=0) (actual time=7780.655..7780.655 rows=9164571 loops=1) Index Cond: ((l_shipdate >= '1993-01-01'::date) AND (l_shipdate < '1994-01-01'::date)) Buffers: shared hit=1 read=24894 Total runtime: 30209.076 ms (11 rows) COMMIT; COMMIT