BEGIN;
BEGIN
create or replace view revenue10 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1995-11-01'
		and l_shipdate < date'1995-11-01' + 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,
	revenue10
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue10
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2358521.14..2363618.25 rows=3710 width=79) (actual time=33164.678..33164.684 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue10.supplier_no)
   Buffers: shared hit=672637 read=646161 dirtied=243 written=833
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1170778.06..1170778.07 rows=1 width=8) (actual time=15804.623..15804.623 rows=1 loops=1)
           Buffers: shared hit=257391 read=401366 written=60
           ->  HashAggregate  (cost=1170694.59..1170731.69 rows=3710 width=12) (actual time=15727.605..15793.499 rows=100000 loops=1)
                 Buffers: shared hit=257391 read=401366 written=60
                 ->  Bitmap Heap Scan on lineitem  (cost=47331.74..1148367.85 rows=2232674 width=12) (actual time=2079.097..11799.581 rows=2243625 loops=1)
                       Recheck Cond: ((l_shipdate >= '1995-11-01'::date) AND (l_shipdate < '1996-01-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=257391 read=401366 written=60
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46773.57 rows=2232674 width=0) (actual time=1657.698..1657.698 rows=2245876 loops=1)
                             Index Cond: ((l_shipdate >= '1995-11-01'::date) AND (l_shipdate < '1996-01-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=1 read=6127
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.063..20.946 rows=46963 loops=1)
         Buffers: shared hit=132 read=1151
   ->  Sort  (cost=1187743.07..1187752.34 rows=3710 width=12) (actual time=33138.724..33138.727 rows=1 loops=1)
         Sort Key: revenue10.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=672505 read=645010 dirtied=243 written=833
         ->  Subquery Scan on revenue10  (cost=1187439.64..1187523.12 rows=3710 width=12) (actual time=33113.158..33138.689 rows=1 loops=1)
               Buffers: shared hit=672505 read=645010 dirtied=243 written=833
               ->  HashAggregate  (cost=1187439.64..1187486.02 rows=3710 width=12) (actual time=33113.156..33138.684 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=672505 read=645010 dirtied=243 written=833
                     ->  Bitmap Heap Scan on lineitem  (cost=47331.74..1148367.85 rows=2232674 width=12) (actual time=4689.204..13662.064 rows=2243625 loops=1)
                           Recheck Cond: ((l_shipdate >= '1995-11-01'::date) AND (l_shipdate < '1996-01-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=415114 read=243644 dirtied=243 written=773
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46773.57 rows=2232674 width=0) (actual time=4183.103..4183.103 rows=2245876 loops=1)
                                 Index Cond: ((l_shipdate >= '1995-11-01'::date) AND (l_shipdate < '1996-01-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=4 read=6125
 Total runtime: 33187.304 ms
(33 rows)

drop view revenue10;
DROP VIEW
COMMIT;
COMMIT