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 >= '1994-12-01'
		and l_shipdate < date'1994-12-01' + 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,
	revenue10
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue10
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2361099.50..2366197.41 rows=3763 width=79) (actual time=23441.425..23441.430 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue10.supplier_no)
   Buffers: shared hit=841197 read=479607 dirtied=209 written=378
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1171969.11..1171969.12 rows=1 width=8) (actual time=11573.303..11573.303 rows=1 loops=1)
           Buffers: shared hit=380022 read=279872 written=3
           ->  HashAggregate  (cost=1171884.44..1171922.07 rows=3763 width=12) (actual time=11490.722..11562.340 rows=100000 loops=1)
                 Buffers: shared hit=380022 read=279872 written=3
                 ->  Bitmap Heap Scan on lineitem  (cost=47879.14..1149300.72 rows=2258372 width=12) (actual time=2133.037..8130.146 rows=2248357 loops=1)
                       Recheck Cond: ((l_shipdate >= '1994-12-01'::date) AND (l_shipdate < '1995-03-01 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=380022 read=279872 written=3
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47314.55 rows=2258372 width=0) (actual time=1652.735..1652.735 rows=2250604 loops=1)
                             Index Cond: ((l_shipdate >= '1994-12-01'::date) AND (l_shipdate < '1995-03-01 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=2 read=6139
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.040..16.381 rows=37000 loops=1)
         Buffers: shared hit=129 read=886
   ->  Sort  (cost=1189130.38..1189139.79 rows=3763 width=12) (actual time=23421.174..23421.176 rows=1 loops=1)
         Sort Key: revenue10.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=841068 read=478721 dirtied=209 written=378
         ->  Subquery Scan on revenue10  (cost=1188822.23..1188906.90 rows=3763 width=12) (actual time=23420.933..23421.147 rows=1 loops=1)
               Buffers: shared hit=841068 read=478721 dirtied=209 written=378
               ->  HashAggregate  (cost=1188822.23..1188869.27 rows=3763 width=12) (actual time=23420.932..23421.145 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=841068 read=478721 dirtied=209 written=378
                     ->  Bitmap Heap Scan on lineitem  (cost=47879.14..1149300.72 rows=2258372 width=12) (actual time=1986.093..8545.849 rows=2248357 loops=1)
                           Recheck Cond: ((l_shipdate >= '1994-12-01'::date) AND (l_shipdate < '1995-03-01 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=461046 read=198849 dirtied=209 written=375
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47314.55 rows=2258372 width=0) (actual time=1654.829..1654.829 rows=2250604 loops=1)
                                 Index Cond: ((l_shipdate >= '1994-12-01'::date) AND (l_shipdate < '1995-03-01 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=17 read=6125
 Total runtime: 23456.752 ms
(33 rows)

drop view revenue10;
DROP VIEW
COMMIT;
COMMIT