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 0.02 - 0.01 and 0.02 + 0.01
	and l_quantity < 25;
                                                                               QUERY PLAN                                                                               
------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Aggregate  (cost=1472312.94..1472312.95 rows=1 width=8) (actual time=18345.315..18345.315 rows=1 loops=1)
   Buffers: shared hit=748308 read=285754 written=6041
   ->  Bitmap Heap Scan on lineitem  (cost=191068.80..1468320.12 rows=798564 width=8) (actual time=5079.153..18147.870 rows=797124 loops=1)
         Recheck Cond: ((l_shipdate >= '1993-01-01'::date) AND (l_shipdate < '1994-01-01'::date))
         Filter: ((l_discount >= 0.01::double precision) AND (l_discount <= 0.03::double precision) AND (l_quantity < 25::double precision))
         Rows Removed by Filter: 8322989
         Heap Blocks: exact=1009168
         Buffers: shared hit=748308 read=285754 written=6041
         ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..190869.15 rows=9131259 width=0) (actual time=4539.414..4539.414 rows=9164571 loops=1)
               Index Cond: ((l_shipdate >= '1993-01-01'::date) AND (l_shipdate < '1994-01-01'::date))
               Buffers: shared read=24894 written=7
 Planning time: 1.847 ms
 Execution time: 18348.785 ms
(13 rows)

COMMIT;
COMMIT