BEGIN;
BEGIN
create or replace view revenue1 (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,
	revenue1
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue1
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2377294.13..2382392.64 rows=3803 width=79) (actual time=33322.207..33322.210 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue1.supplier_no)
   Buffers: shared hit=282886 read=1044760 dirtied=681 written=14103
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1179924.41..1179924.42 rows=1 width=8) (actual time=15021.248..15021.248 rows=1 loops=1)
           Buffers: shared hit=176169 read=486700 dirtied=681 written=13902
           ->  HashAggregate  (cost=1179838.85..1179876.88 rows=3803 width=12) (actual time=14940.463..15009.746 rows=100000 loops=1)
                 Buffers: shared hit=176169 read=486700 dirtied=681 written=13902
                 ->  Bitmap Heap Scan on lineitem  (cost=48523.67..1156879.98 rows=2295887 width=12) (actual time=1608.196..11226.316 rows=2242956 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=176169 read=486700 dirtied=681 written=13902
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47949.70 rows=2295887 width=0) (actual time=1184.081..1184.081 rows=2258483 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=0.078..29.231 rows=69999 loops=1)
         Buffers: shared hit=1906 read=1
   ->  Sort  (cost=1197369.71..1197379.22 rows=3803 width=12) (actual time=33285.639..33285.640 rows=1 loops=1)
         Sort Key: revenue1.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=280980 read=1044759 dirtied=681 written=14103
         ->  Subquery Scan on revenue1  (cost=1197058.00..1197143.57 rows=3803 width=12) (actual time=33257.018..33285.605 rows=1 loops=1)
               Buffers: shared hit=280980 read=1044759 dirtied=681 written=14103
               ->  HashAggregate  (cost=1197058.00..1197105.54 rows=3803 width=12) (actual time=33257.016..33285.600 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=280980 read=1044759 dirtied=681 written=14103
                     ->  Bitmap Heap Scan on lineitem  (cost=48523.67..1156879.98 rows=2295887 width=12) (actual time=2243.928..14171.349 rows=2242956 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=104811 read=558059 written=201
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47949.70 rows=2295887 width=0) (actual time=1831.459..1831.459 rows=2258483 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=6128
 Total runtime: 33334.056 ms
(33 rows)

drop view revenue1;
DROP VIEW
COMMIT;
COMMIT