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 >= '1994-08-01'
		and l_shipdate < date'1994-08-01' + 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=2363039.17..2368136.98 rows=3757 width=79) (actual time=33238.838..33238.844 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue8.supplier_no)
   Buffers: shared hit=548942 read=772086 written=220
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1172944.13..1172944.14 rows=1 width=8) (actual time=15093.811..15093.811 rows=1 loops=1)
           Buffers: shared hit=310041 read=349817 written=15
           ->  HashAggregate  (cost=1172859.59..1172897.16 rows=3757 width=12) (actual time=15000.307..15075.453 rows=100000 loops=1)
                 Buffers: shared hit=310041 read=349817 written=15
                 ->  Bitmap Heap Scan on lineitem  (cost=47825.52..1150289.16 rows=2257043 width=12) (actual time=2018.497..10962.511 rows=2247699 loops=1)
                       Recheck Cond: ((l_shipdate >= '1994-08-01'::date) AND (l_shipdate < '1994-10-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=310041 read=349817 written=15
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47261.26 rows=2257043 width=0) (actual time=1676.396..1676.396 rows=2252299 loops=1)
                             Index Cond: ((l_shipdate >= '1994-08-01'::date) AND (l_shipdate < '1994-10-30 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6140
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.087..20.838 rows=47970 loops=1)
         Buffers: shared hit=1311
   ->  Sort  (cost=1190095.03..1190104.42 rows=3757 width=12) (actual time=33212.987..33212.990 rows=1 loops=1)
         Sort Key: revenue8.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=547631 read=772086 written=220
         ->  Subquery Scan on revenue8  (cost=1189787.42..1189871.95 rows=3757 width=12) (actual time=33210.564..33212.954 rows=1 loops=1)
               Buffers: shared hit=547631 read=772086 written=220
               ->  HashAggregate  (cost=1189787.42..1189834.38 rows=3757 width=12) (actual time=33210.561..33212.950 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=547631 read=772086 written=220
                     ->  Bitmap Heap Scan on lineitem  (cost=47825.52..1150289.16 rows=2257043 width=12) (actual time=2428.104..13922.146 rows=2247699 loops=1)
                           Recheck Cond: ((l_shipdate >= '1994-08-01'::date) AND (l_shipdate < '1994-10-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=237590 read=422269 written=205
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47261.26 rows=2257043 width=0) (actual time=2061.570..2061.570 rows=2252299 loops=1)
                                 Index Cond: ((l_shipdate >= '1994-08-01'::date) AND (l_shipdate < '1994-10-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=2 read=6139
 Total runtime: 33250.684 ms
(33 rows)

drop view revenue8;
DROP VIEW
COMMIT;
COMMIT