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 >= '1994-11-01'
		and l_shipdate < date'1994-11-01' + 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=2384465.78..2389562.83 rows=3723 width=79) (actual time=20230.203..20230.208 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue7.supplier_no)
   Buffers: shared hit=849016 read=485466 dirtied=515 written=841
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1183635.02..1183635.03 rows=1 width=8) (actual time=9405.439..9405.439 rows=1 loops=1)
           Buffers: shared hit=409251 read=257470 written=411
           ->  HashAggregate  (cost=1183551.26..1183588.49 rows=3723 width=12) (actual time=9360.778..9394.898 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=409251 read=257470 written=411
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=47707.21..1160918.44 rows=2263282 width=12) (actual time=1401.064..7438.960 rows=2246551 loops=1)
                       Recheck Cond: ((l_shipdate >= '1994-11-01'::date) AND (l_shipdate < '1995-01-30 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=660584
                       Buffers: shared hit=409251 read=257470 written=411
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47141.39 rows=2263282 width=0) (actual time=1065.225..1065.225 rows=2273926 loops=1)
                             Index Cond: ((l_shipdate >= '1994-11-01'::date) AND (l_shipdate < '1995-01-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=2 read=6135
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.031..16.148 rows=37989 loops=1)
         Buffers: shared hit=1040
   ->  Sort  (cost=1200830.45..1200839.76 rows=3723 width=12) (actual time=20210.123..20210.126 rows=1 loops=1)
         Sort Key: revenue7.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=847976 read=485466 dirtied=515 written=841
         ->  Subquery Scan on revenue7  (cost=1200525.87..1200609.64 rows=3723 width=12) (actual time=20195.249..20210.099 rows=1 loops=1)
               Buffers: shared hit=847976 read=485466 dirtied=515 written=841
               ->  HashAggregate  (cost=1200525.87..1200572.41 rows=3723 width=12) (actual time=20195.248..20210.097 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=847976 read=485466 dirtied=515 written=841
                     ->  Bitmap Heap Scan on lineitem  (cost=47707.21..1160918.44 rows=2263282 width=12) (actual time=1904.366..8583.232 rows=2246551 loops=1)
                           Recheck Cond: ((l_shipdate >= '1994-11-01'::date) AND (l_shipdate < '1995-01-30 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=660584
                           Buffers: shared hit=438725 read=227996 dirtied=515 written=430
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47141.39 rows=2263282 width=0) (actual time=1477.191..1477.191 rows=2273926 loops=1)
                                 Index Cond: ((l_shipdate >= '1994-11-01'::date) AND (l_shipdate < '1995-01-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=3 read=6134 written=21
 Planning time: 2.588 ms
 Execution time: 20239.062 ms
(38 rows)

drop view revenue7;
DROP VIEW
COMMIT;
COMMIT