BEGIN;
BEGIN
create or replace view revenue7 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1997-10-01'
		and l_shipdate < date'1997-10-01' + 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,
	revenue7
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue7
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2385324.47..2390421.37 rows=3696 width=79) (actual time=47083.106..47083.109 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue7.supplier_no)
   Buffers: shared hit=702043 read=633052 written=24758
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1184111.21..1184111.22 rows=1 width=8) (actual time=25271.474..25271.474 rows=1 loops=1)
           Buffers: shared hit=309826 read=356757 written=24724
           ->  HashAggregate  (cost=1184028.05..1184065.01 rows=3696 width=12) (actual time=25192.296..25257.854 rows=100000 loops=1)
                 Buffers: shared hit=309826 read=356757 written=24724
                 ->  Bitmap Heap Scan on lineitem  (cost=47432.30..1161517.35 rows=2251070 width=12) (actual time=2344.589..20726.459 rows=2244404 loops=1)
                       Recheck Cond: ((l_shipdate >= '1997-10-01'::date) AND (l_shipdate < '1997-12-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=309826 read=356757 written=24724
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46869.53 rows=2251070 width=0) (actual time=1970.869..1970.869 rows=2273989 loops=1)
                             Index Cond: ((l_shipdate >= '1997-10-01'::date) AND (l_shipdate < '1997-12-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=806 read=5323
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.112..51.874 rows=70888 loops=1)
         Buffers: shared hit=1927 read=1
   ->  Sort  (cost=1201213.25..1201222.49 rows=3696 width=12) (actual time=47021.800..47021.801 rows=1 loops=1)
         Sort Key: revenue7.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=700116 read=633051 written=24758
         ->  Subquery Scan on revenue7  (cost=1200911.07..1200994.23 rows=3696 width=12) (actual time=47013.759..47021.759 rows=1 loops=1)
               Buffers: shared hit=700116 read=633051 written=24758
               ->  HashAggregate  (cost=1200911.07..1200957.27 rows=3696 width=12) (actual time=47013.757..47021.755 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=700116 read=633051 written=24758
                     ->  Bitmap Heap Scan on lineitem  (cost=47432.30..1161517.35 rows=2251070 width=12) (actual time=2657.990..17353.986 rows=2244404 loops=1)
                           Recheck Cond: ((l_shipdate >= '1997-10-01'::date) AND (l_shipdate < '1997-12-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=390290 read=276294 written=34
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46869.53 rows=2251070 width=0) (actual time=2126.613..2126.613 rows=2273130 loops=1)
                                 Index Cond: ((l_shipdate >= '1997-10-01'::date) AND (l_shipdate < '1997-12-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6130
 Total runtime: 47107.297 ms
(33 rows)

drop view revenue7;
DROP VIEW
COMMIT;
COMMIT