BEGIN;
BEGIN
create or replace view revenue2 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1995-06-01'
		and l_shipdate < date'1995-06-01' + 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,
	revenue2
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue2
	)
order by
	s_suppkey;
                                                                                      QUERY PLAN                                                                                       
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2369842.62..2374940.70 rows=3792 width=79) (actual time=19431.967..19431.972 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue2.supplier_no)
   Buffers: shared hit=680392 read=643908 written=21416
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1176245.13..1176245.14 rows=1 width=8) (actual time=10838.495..10838.495 rows=1 loops=1)
           Buffers: shared hit=299256 read=361933 written=21345
           ->  HashAggregate  (cost=1176159.81..1176197.73 rows=3792 width=12) (actual time=10757.225..10827.941 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=299256 read=361933 written=21345
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=48330.98..1153324.28 rows=2283553 width=12) (actual time=1176.052..7961.141 rows=2246423 loops=1)
                       Recheck Cond: ((l_shipdate >= '1995-06-01'::date) AND (l_shipdate < '1995-08-30 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=655054
                       Buffers: shared hit=299256 read=361933 written=21345
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47760.10 rows=2283553 width=0) (actual time=879.192..879.192 rows=2255550 loops=1)
                             Index Cond: ((l_shipdate >= '1995-06-01'::date) AND (l_shipdate < '1995-08-30 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6135
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.029..26.927 rows=70652 loops=1)
         Buffers: shared hit=1922
   ->  Sort  (cost=1193597.19..1193606.67 rows=3792 width=12) (actual time=19397.856..19397.858 rows=1 loops=1)
         Sort Key: revenue2.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=678470 read=643908 written=21416
         ->  Subquery Scan on revenue2  (cost=1193286.46..1193371.78 rows=3792 width=12) (actual time=19374.253..19397.827 rows=1 loops=1)
               Buffers: shared hit=678470 read=643908 written=21416
               ->  HashAggregate  (cost=1193286.46..1193333.86 rows=3792 width=12) (actual time=19374.252..19397.826 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=678470 read=643908 written=21416
                     ->  Bitmap Heap Scan on lineitem  (cost=48330.98..1153324.28 rows=2283553 width=12) (actual time=1277.923..6757.458 rows=2246423 loops=1)
                           Recheck Cond: ((l_shipdate >= '1995-06-01'::date) AND (l_shipdate < '1995-08-30 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=655054
                           Buffers: shared hit=379214 read=281975 written=71
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47760.10 rows=2283553 width=0) (actual time=968.057..968.057 rows=2255550 loops=1)
                                 Index Cond: ((l_shipdate >= '1995-06-01'::date) AND (l_shipdate < '1995-08-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6135
 Planning time: 2.534 ms
 Execution time: 19445.335 ms
(38 rows)

drop view revenue2;
DROP VIEW
COMMIT;
COMMIT