BEGIN;
BEGIN
create or replace view revenue1 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1996-12-01'
		and l_shipdate < date'1996-12-01' + 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,
	revenue1
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue1
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2375813.93..2380911.87 rows=3765 width=79) (actual time=37314.647..37314.648 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue1.supplier_no)
   Buffers: shared hit=577911 read=749044 written=44441
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1179241.15..1179241.16 rows=1 width=8) (actual time=17524.236..17524.236 rows=1 loops=1)
           Buffers: shared hit=297234 read=366091 written=527
           ->  HashAggregate  (cost=1179156.44..1179194.09 rows=3765 width=12) (actual time=17468.461..17512.905 rows=100000 loops=1)
                 Buffers: shared hit=297234 read=366091 written=527
                 ->  Bitmap Heap Scan on lineitem  (cost=48211.77..1156345.77 rows=2281067 width=12) (actual time=1980.265..13351.289 rows=2243711 loops=1)
                       Recheck Cond: ((l_shipdate >= '1996-12-01'::date) AND (l_shipdate < '1997-03-01 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=297234 read=366091 written=527
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47641.50 rows=2281067 width=0) (actual time=1501.916..1501.916 rows=2263846 loops=1)
                             Index Cond: ((l_shipdate >= '1996-12-01'::date) AND (l_shipdate < '1997-03-01 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=72 read=6064 written=84
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.097..6.601 rows=10906 loops=1)
         Buffers: shared hit=303 read=1
   ->  Sort  (cost=1196572.77..1196582.18 rows=3765 width=12) (actual time=37306.657..37306.657 rows=1 loops=1)
         Sort Key: revenue1.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=577608 read=749043 written=44441
         ->  Subquery Scan on revenue1  (cost=1196264.44..1196349.16 rows=3765 width=12) (actual time=37279.300..37306.627 rows=1 loops=1)
               Buffers: shared hit=577608 read=749043 written=44441
               ->  HashAggregate  (cost=1196264.44..1196311.51 rows=3765 width=12) (actual time=37279.298..37306.624 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=577608 read=749043 written=44441
                     ->  Bitmap Heap Scan on lineitem  (cost=48211.77..1156345.77 rows=2281067 width=12) (actual time=3185.146..15663.172 rows=2243711 loops=1)
                           Recheck Cond: ((l_shipdate >= '1996-12-01'::date) AND (l_shipdate < '1997-03-01 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=280374 read=382952 written=43914
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47641.50 rows=2281067 width=0) (actual time=1632.685..1632.685 rows=2261649 loops=1)
                                 Index Cond: ((l_shipdate >= '1996-12-01'::date) AND (l_shipdate < '1997-03-01 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6137
 Total runtime: 37332.997 ms
(33 rows)

drop view revenue1;
DROP VIEW
COMMIT;
COMMIT