BEGIN;
BEGIN
create or replace view revenue3 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1996-01-01'
		and l_shipdate < date'1996-01-01' + 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,
	revenue3
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue3
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2376061.59..2381158.00 rows=3663 width=79) (actual time=77803.525..77803.529 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue3.supplier_no)
   Buffers: shared hit=906982 read=424580 dirtied=286 written=8298
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1179593.80..1179593.81 rows=1 width=8) (actual time=46208.068..46208.068 rows=1 loops=1)
           Buffers: shared hit=376986 read=287841 written=8298
           ->  HashAggregate  (cost=1179511.39..1179548.02 rows=3663 width=12) (actual time=46134.126..46196.518 rows=100000 loops=1)
                 Buffers: shared hit=376986 read=287841 written=8298
                 ->  Bitmap Heap Scan on lineitem  (cost=46867.59..1157301.87 rows=2220952 width=12) (actual time=3064.864..41221.188 rows=2242772 loops=1)
                       Recheck Cond: ((l_shipdate >= '1996-01-01'::date) AND (l_shipdate < '1996-03-31 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=376986 read=287841 written=8298
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46312.35 rows=2220952 width=0) (actual time=2666.937..2666.937 rows=2265437 loops=1)
                             Index Cond: ((l_shipdate >= '1996-01-01'::date) AND (l_shipdate < '1996-03-31 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6127
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.061..89.875 rows=69999 loops=1)
         Buffers: shared hit=1907
   ->  Sort  (cost=1196467.77..1196476.93 rows=3663 width=12) (actual time=77701.481..77701.482 rows=1 loops=1)
         Sort Key: revenue3.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=905075 read=424580 dirtied=286 written=8298
         ->  Subquery Scan on revenue3  (cost=1196168.53..1196250.94 rows=3663 width=12) (actual time=77680.840..77701.456 rows=1 loops=1)
               Buffers: shared hit=905075 read=424580 dirtied=286 written=8298
               ->  HashAggregate  (cost=1196168.53..1196214.31 rows=3663 width=12) (actual time=77680.838..77701.452 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=905075 read=424580 dirtied=286 written=8298
                     ->  Bitmap Heap Scan on lineitem  (cost=46867.59..1157301.87 rows=2220952 width=12) (actual time=2530.142..26967.745 rows=2242772 loops=1)
                           Recheck Cond: ((l_shipdate >= '1996-01-01'::date) AND (l_shipdate < '1996-03-31 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=528089 read=136739 dirtied=286
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46312.35 rows=2220952 width=0) (actual time=2149.432..2149.432 rows=2265437 loops=1)
                                 Index Cond: ((l_shipdate >= '1996-01-01'::date) AND (l_shipdate < '1996-03-31 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=4873 read=1255
 Total runtime: 77817.403 ms
(33 rows)

drop view revenue3;
DROP VIEW
COMMIT;
COMMIT