BEGIN;
BEGIN
create or replace view revenue7 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1995-05-01'
		and l_shipdate < date'1995-05-01' + 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,
	revenue7
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue7
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2382961.87..2388059.10 rows=3735 width=79) (actual time=21833.081..21833.086 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue7.supplier_no)
   Buffers: shared hit=882553 read=451371 written=519
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1182860.23..1182860.24 rows=1 width=8) (actual time=10076.528..10076.528 rows=1 loops=1)
           Buffers: shared hit=477204 read=188399 written=215
           ->  HashAggregate  (cost=1182776.19..1182813.54 rows=3735 width=12) (actual time=10030.928..10065.883 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=477204 read=188399 written=215
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=47856.54..1160083.53 rows=2269266 width=12) (actual time=1620.226..7509.792 rows=2245268 loops=1)
                       Recheck Cond: ((l_shipdate >= '1995-05-01'::date) AND (l_shipdate < '1995-07-30 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=659468
                       Buffers: shared hit=477204 read=188399 written=215
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47289.23 rows=2269266 width=0) (actual time=1261.994..1261.994 rows=2270235 loops=1)
                             Index Cond: ((l_shipdate >= '1995-05-01'::date) AND (l_shipdate < '1995-07-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=2 read=6133 written=4
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.047..40.912 rows=99984 loops=1)
         Buffers: shared hit=2718
   ->  Sort  (cost=1200101.34..1200110.68 rows=3735 width=12) (actual time=21781.798..21781.800 rows=1 loops=1)
         Sort Key: revenue7.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=879835 read=451371 written=519
         ->  Subquery Scan on revenue7  (cost=1199795.69..1199879.72 rows=3735 width=12) (actual time=21775.721..21781.760 rows=1 loops=1)
               Buffers: shared hit=879835 read=451371 written=519
               ->  HashAggregate  (cost=1199795.69..1199842.37 rows=3735 width=12) (actual time=21775.720..21781.759 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=879835 read=451371 written=519
                     ->  Bitmap Heap Scan on lineitem  (cost=47856.54..1160083.53 rows=2269266 width=12) (actual time=1557.001..9236.924 rows=2245268 loops=1)
                           Recheck Cond: ((l_shipdate >= '1995-05-01'::date) AND (l_shipdate < '1995-07-30 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=659468
                           Buffers: shared hit=402631 read=262972 written=304
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47289.23 rows=2269266 width=0) (actual time=1227.896..1227.896 rows=2270235 loops=1)
                                 Index Cond: ((l_shipdate >= '1995-05-01'::date) AND (l_shipdate < '1995-07-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6135 written=7
 Planning time: 4.273 ms
 Execution time: 21843.497 ms
(38 rows)

drop view revenue7;
DROP VIEW
COMMIT;
COMMIT