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 >= '1995-03-01'
		and l_shipdate < date'1995-03-01' + 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=2391339.76..2396437.68 rows=3764 width=79) (actual time=68800.517..68800.521 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue7.supplier_no)
   Buffers: shared hit=345733 read=992667 dirtied=504 written=28697
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1186968.43..1186968.44 rows=1 width=8) (actual time=35745.571..35745.571 rows=1 loops=1)
           Buffers: shared hit=280678 read=387163 written=22
           ->  HashAggregate  (cost=1186883.74..1186921.38 rows=3764 width=12) (actual time=35666.106..35733.764 rows=100000 loops=1)
                 Buffers: shared hit=280678 read=387163 written=22
                 ->  Bitmap Heap Scan on lineitem  (cost=48237.26..1163977.95 rows=2290579 width=12) (actual time=2416.980..30959.501 rows=2249613 loops=1)
                       Recheck Cond: ((l_shipdate >= '1995-03-01'::date) AND (l_shipdate < '1995-05-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=280678 read=387163 written=22
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47664.62 rows=2290579 width=0) (actual time=2046.901..2046.901 rows=2281299 loops=1)
                             Index Cond: ((l_shipdate >= '1995-03-01'::date) AND (l_shipdate < '1995-05-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=1 read=6145
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.149..117.836 rows=99913 loops=1)
         Buffers: shared hit=2717
   ->  Sort  (cost=1204371.32..1204380.73 rows=3764 width=12) (actual time=68666.085..68666.086 rows=1 loops=1)
         Sort Key: revenue7.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=343016 read=992667 dirtied=504 written=28697
         ->  Subquery Scan on revenue7  (cost=1204063.08..1204147.77 rows=3764 width=12) (actual time=68657.268..68666.053 rows=1 loops=1)
               Buffers: shared hit=343016 read=992667 dirtied=504 written=28697
               ->  HashAggregate  (cost=1204063.08..1204110.13 rows=3764 width=12) (actual time=68657.266..68666.050 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=343016 read=992667 dirtied=504 written=28697
                     ->  Bitmap Heap Scan on lineitem  (cost=48237.26..1163977.95 rows=2290579 width=12) (actual time=2616.279..27825.921 rows=2249613 loops=1)
                           Recheck Cond: ((l_shipdate >= '1995-03-01'::date) AND (l_shipdate < '1995-05-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=62338 read=605504 dirtied=504 written=28675
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47664.62 rows=2290579 width=0) (actual time=2265.100..2265.100 rows=2281299 loops=1)
                                 Index Cond: ((l_shipdate >= '1995-03-01'::date) AND (l_shipdate < '1995-05-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=1150 read=4997 written=1411
 Total runtime: 68816.236 ms
(33 rows)

drop view revenue7;
DROP VIEW
COMMIT;
COMMIT