BEGIN;
BEGIN
create or replace view revenue9 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1996-02-01'
		and l_shipdate < date'1996-02-01' + 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,
	revenue9
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue9
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2372554.10..2377651.65 rows=3757 width=79) (actual time=21081.889..21081.894 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue9.supplier_no)
   Buffers: shared hit=589081 read=736804 written=13374
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1177655.33..1177655.34 rows=1 width=8) (actual time=10067.861..10067.861 rows=1 loops=1)
           Buffers: shared hit=300566 read=361531 written=13266
           ->  HashAggregate  (cost=1177570.80..1177608.37 rows=3757 width=12) (actual time=10025.685..10057.496 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=300566 read=361531 written=13266
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=47981.30..1154877.40 rows=2269340 width=12) (actual time=1657.397..8154.210 rows=2243551 loops=1)
                       Recheck Cond: ((l_shipdate >= '1996-02-01'::date) AND (l_shipdate < '1996-05-01 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=655970
                       Buffers: shared hit=300566 read=361531 written=13266
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47413.97 rows=2269340 width=0) (actual time=1342.259..1342.259 rows=2256677 loops=1)
                             Index Cond: ((l_shipdate >= '1996-02-01'::date) AND (l_shipdate < '1996-05-01 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6127 written=5
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.035..24.339 rows=61971 loops=1)
         Buffers: shared hit=1691
   ->  Sort  (cost=1194898.46..1194907.85 rows=3757 width=12) (actual time=21051.264..21051.266 rows=1 loops=1)
         Sort Key: revenue9.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=587390 read=736804 written=13374
         ->  Subquery Scan on revenue9  (cost=1194590.85..1194675.38 rows=3757 width=12) (actual time=21038.081..21051.235 rows=1 loops=1)
               Buffers: shared hit=587390 read=736804 written=13374
               ->  HashAggregate  (cost=1194590.85..1194637.81 rows=3757 width=12) (actual time=21038.080..21051.234 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=587390 read=736804 written=13374
                     ->  Bitmap Heap Scan on lineitem  (cost=47981.30..1154877.40 rows=2269340 width=12) (actual time=1676.322..9030.299 rows=2243551 loops=1)
                           Recheck Cond: ((l_shipdate >= '1996-02-01'::date) AND (l_shipdate < '1996-05-01 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=655970
                           Buffers: shared hit=286824 read=375273 written=108
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47413.97 rows=2269340 width=0) (actual time=1311.118..1311.118 rows=2256677 loops=1)
                                 Index Cond: ((l_shipdate >= '1996-02-01'::date) AND (l_shipdate < '1996-05-01 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6127 written=2
 Planning time: 2.867 ms
 Execution time: 21097.526 ms
(38 rows)

drop view revenue9;
DROP VIEW
COMMIT;
COMMIT