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 >= '1993-02-01'
		and l_shipdate < date'1993-02-01' + 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=2360668.69..2365766.48 rows=3755 width=79) (actual time=23674.200..23674.204 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue10.supplier_no)
   Buffers: shared hit=696662 read=623780 dirtied=391 written=1749
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1171770.02..1171770.03 rows=1 width=8) (actual time=11705.466..11705.467 rows=1 loops=1)
           Buffers: shared hit=281245 read=378239 written=193
           ->  HashAggregate  (cost=1171685.54..1171723.09 rows=3755 width=12) (actual time=11614.701..11694.360 rows=100000 loops=1)
                 Buffers: shared hit=281245 read=378239 written=193
                 ->  Bitmap Heap Scan on lineitem  (cost=47787.26..1149144.63 rows=2254091 width=12) (actual time=2137.333..8477.865 rows=2250213 loops=1)
                       Recheck Cond: ((l_shipdate >= '1993-02-01'::date) AND (l_shipdate < '1993-05-02 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=281245 read=378239 written=193
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47223.74 rows=2254091 width=0) (actual time=1736.680..1736.680 rows=2252390 loops=1)
                             Index Cond: ((l_shipdate >= '1993-02-01'::date) AND (l_shipdate < '1993-05-02 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6146
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.034..25.357 rows=53897 loops=1)
         Buffers: shared hit=180 read=1293
   ->  Sort  (cost=1188898.65..1188908.04 rows=3755 width=12) (actual time=23643.132..23643.134 rows=1 loops=1)
         Sort Key: revenue10.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=696482 read=622487 dirtied=391 written=1749
         ->  Subquery Scan on revenue10  (cost=1188591.22..1188675.71 rows=3755 width=12) (actual time=23588.157..23643.093 rows=1 loops=1)
               Buffers: shared hit=696482 read=622487 dirtied=391 written=1749
               ->  HashAggregate  (cost=1188591.22..1188638.16 rows=3755 width=12) (actual time=23588.155..23643.088 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=696482 read=622487 dirtied=391 written=1749
                     ->  Bitmap Heap Scan on lineitem  (cost=47787.26..1149144.63 rows=2254091 width=12) (actual time=2306.562..8799.665 rows=2250213 loops=1)
                           Recheck Cond: ((l_shipdate >= '1993-02-01'::date) AND (l_shipdate < '1993-05-02 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=415237 read=244248 dirtied=391 written=1556
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47223.74 rows=2254091 width=0) (actual time=1809.104..1809.104 rows=2252390 loops=1)
                                 Index Cond: ((l_shipdate >= '1993-02-01'::date) AND (l_shipdate < '1993-05-02 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=16 read=6131
 Total runtime: 23693.004 ms
(33 rows)

drop view revenue10;
DROP VIEW
COMMIT;
COMMIT