BEGIN;
BEGIN
create or replace view revenue2 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1997-01-01'
		and l_shipdate < date'1997-01-01' + 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,
	revenue2
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue2
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2362821.87..2367918.09 rows=3668 width=79) (actual time=25205.357..25205.364 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue2.supplier_no)
   Buffers: shared hit=832232 read=493160 written=75
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1173001.90..1173001.91 rows=1 width=8) (actual time=10798.397..10798.397 rows=1 loops=1)
           Buffers: shared hit=439230 read=222271
           ->  HashAggregate  (cost=1172919.37..1172956.05 rows=3668 width=12) (actual time=10735.356..10781.665 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=439230 read=222271
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=46844.05..1150785.24 rows=2213413 width=12) (actual time=2352.821..8506.992 rows=2247163 loops=1)
                       Recheck Cond: ((l_shipdate >= '1997-01-01'::date) AND (l_shipdate < '1997-04-01 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=655363
                       Buffers: shared hit=439230 read=222271
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46290.70 rows=2213413 width=0) (actual time=1770.105..1770.105 rows=2256133 loops=1)
                             Index Cond: ((l_shipdate >= '1997-01-01'::date) AND (l_shipdate < '1997-04-01 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6138
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.048..47.248 rows=87911 loops=1)
         Buffers: shared hit=2390
   ->  Sort  (cost=1189819.66..1189828.83 rows=3668 width=12) (actual time=25144.718..25144.720 rows=1 loops=1)
         Sort Key: revenue2.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=829842 read=493160 written=75
         ->  Subquery Scan on revenue2  (cost=1189519.97..1189602.50 rows=3668 width=12) (actual time=25103.645..25144.681 rows=1 loops=1)
               Buffers: shared hit=829842 read=493160 written=75
               ->  HashAggregate  (cost=1189519.97..1189565.82 rows=3668 width=12) (actual time=25103.643..25144.675 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=829842 read=493160 written=75
                     ->  Bitmap Heap Scan on lineitem  (cost=46844.05..1150785.24 rows=2213413 width=12) (actual time=2163.316..10733.956 rows=2247163 loops=1)
                           Recheck Cond: ((l_shipdate >= '1997-01-01'::date) AND (l_shipdate < '1997-04-01 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=655363
                           Buffers: shared hit=390612 read=270889 written=75
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46290.70 rows=2213413 width=0) (actual time=1457.110..1457.110 rows=2256133 loops=1)
                                 Index Cond: ((l_shipdate >= '1997-01-01'::date) AND (l_shipdate < '1997-04-01 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6138
 Planning time: 3.350 ms
 Execution time: 25225.540 ms
(38 rows)

drop view revenue2;
DROP VIEW
COMMIT;
COMMIT