BEGIN;
BEGIN
create or replace view revenue8 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1995-07-01'
		and l_shipdate < date'1995-07-01' + interval '90 days'
	group by
		l_suppkey;
CREATE VIEW
EXPLAIN (ANALYZE, BUFFERS)
select
	s_suppkey,
	s_name,
	s_address,
	s_phone,
	total_revenue
from
	supplier,
	revenue8
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue8
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2360592.49..2365689.52 rows=3704 width=79) (actual time=34369.019..34369.023 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue8.supplier_no)
   Buffers: shared hit=752538 read=568558 dirtied=265 written=693
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1171814.13..1171814.14 rows=1 width=8) (actual time=16027.057..16027.057 rows=1 loops=1)
           Buffers: shared hit=319069 read=340918 written=106
           ->  HashAggregate  (cost=1171730.79..1171767.83 rows=3704 width=12) (actual time=15930.625..16008.990 rows=100000 loops=1)
                 Buffers: shared hit=319069 read=340918 written=106
                 ->  Bitmap Heap Scan on lineitem  (cost=47307.21..1149404.56 rows=2232623 width=12) (actual time=1954.585..11884.234 rows=2247975 loops=1)
                       Recheck Cond: ((l_shipdate >= '1995-07-01'::date) AND (l_shipdate < '1995-09-29 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=319069 read=340918 written=106
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46749.06 rows=2232623 width=0) (actual time=1578.090..1578.090 rows=2252414 loops=1)
                             Index Cond: ((l_shipdate >= '1995-07-01'::date) AND (l_shipdate < '1995-09-29 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6139
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.082..26.677 rows=40959 loops=1)
         Buffers: shared hit=1120 read=1
   ->  Sort  (cost=1188778.35..1188787.61 rows=3704 width=12) (actual time=34334.851..34334.851 rows=1 loops=1)
         Sort Key: revenue8.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=751418 read=568557 dirtied=265 written=693
         ->  Subquery Scan on revenue8  (cost=1188475.46..1188558.80 rows=3704 width=12) (actual time=34327.947..34334.818 rows=1 loops=1)
               Buffers: shared hit=751418 read=568557 dirtied=265 written=693
               ->  HashAggregate  (cost=1188475.46..1188521.76 rows=3704 width=12) (actual time=34327.944..34334.812 rows=1 loops=1)
                     Filter: (sum((public.lineitem.l_extendedprice * (1::double precision - public.lineitem.l_discount))) = $0)
                     Rows Removed by Filter: 99999
                     Buffers: shared hit=751418 read=568557 dirtied=265 written=693
                     ->  Bitmap Heap Scan on lineitem  (cost=47307.21..1149404.56 rows=2232623 width=12) (actual time=3010.567..13721.852 rows=2247975 loops=1)
                           Recheck Cond: ((l_shipdate >= '1995-07-01'::date) AND (l_shipdate < '1995-09-29 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=432349 read=227639 dirtied=265 written=587
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46749.06 rows=2232623 width=0) (actual time=2576.598..2576.598 rows=2252414 loops=1)
                                 Index Cond: ((l_shipdate >= '1995-07-01'::date) AND (l_shipdate < '1995-09-29 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=17 read=6123 written=33
 Total runtime: 34401.475 ms
(33 rows)

drop view revenue8;
DROP VIEW
COMMIT;
COMMIT