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 >= '1996-07-01'
		and l_shipdate < date'1996-07-01' + 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=2361753.57..2366851.37 rows=3773 width=79) (actual time=20822.662..20822.665 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue10.supplier_no)
   Buffers: shared hit=687363 read=631788 dirtied=369 written=148
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1172270.61..1172270.62 rows=1 width=8) (actual time=10211.510..10211.510 rows=1 loops=1)
           Buffers: shared hit=328910 read=329834 written=93
           ->  HashAggregate  (cost=1172185.72..1172223.45 rows=3773 width=12) (actual time=10168.338..10201.850 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=328910 read=329834 written=93
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=48013.37..1149535.18 rows=2265054 width=12) (actual time=2297.700..8267.825 rows=2245981 loops=1)
                       Recheck Cond: ((l_shipdate >= '1996-07-01'::date) AND (l_shipdate < '1996-09-29 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=652610
                       Buffers: shared hit=328910 read=329834 written=93
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47447.11 rows=2265054 width=0) (actual time=1797.697..1797.697 rows=2248171 loops=1)
                             Index Cond: ((l_shipdate >= '1996-07-01'::date) AND (l_shipdate < '1996-09-29 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6134
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.030..24.743 rows=60982 loops=1)
         Buffers: shared hit=1663
   ->  Sort  (cost=1189482.66..1189492.09 rows=3773 width=12) (actual time=20792.185..20792.187 rows=1 loops=1)
         Sort Key: revenue10.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=685700 read=631788 dirtied=369 written=148
         ->  Subquery Scan on revenue10  (cost=1189173.62..1189258.52 rows=3773 width=12) (actual time=20762.836..20792.154 rows=1 loops=1)
               Buffers: shared hit=685700 read=631788 dirtied=369 written=148
               ->  HashAggregate  (cost=1189173.62..1189220.79 rows=3773 width=12) (actual time=20762.836..20792.153 rows=1 loops=1)
                     Group Key: lineitem.l_suppkey
                     Filter: (sum((lineitem.l_extendedprice * (1::double precision - lineitem.l_discount))) = $0)
                     Rows Removed by Filter: 99999
                     Buffers: shared hit=685700 read=631788 dirtied=369 written=148
                     ->  Bitmap Heap Scan on lineitem  (cost=48013.37..1149535.18 rows=2265054 width=12) (actual time=1728.203..8165.565 rows=2245981 loops=1)
                           Recheck Cond: ((l_shipdate >= '1996-07-01'::date) AND (l_shipdate < '1996-09-29 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=652610
                           Buffers: shared hit=356790 read=301954 dirtied=369 written=55
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47447.11 rows=2265054 width=0) (actual time=1314.346..1314.346 rows=2248171 loops=1)
                                 Index Cond: ((l_shipdate >= '1996-07-01'::date) AND (l_shipdate < '1996-09-29 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6134 written=55
 Planning time: 2.658 ms
 Execution time: 20844.521 ms
(38 rows)

drop view revenue10;
DROP VIEW
COMMIT;
COMMIT