BEGIN;
BEGIN
create or replace view revenue3 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1994-07-01'
		and l_shipdate < date'1994-07-01' + 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,
	revenue3
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue3
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2379810.10..2384907.50 rows=3729 width=79) (actual time=25799.280..25799.281 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue3.supplier_no)
   Buffers: shared hit=56150 read=1274856 dirtied=102 written=721
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1181325.24..1181325.25 rows=1 width=8) (actual time=12794.885..12794.885 rows=1 loops=1)
           Buffers: shared hit=14448 read=650942
           ->  HashAggregate  (cost=1181241.33..1181278.62 rows=3729 width=12) (actual time=12727.840..12784.188 rows=100000 loops=1)
                 Buffers: shared hit=14448 read=650942
                 ->  Bitmap Heap Scan on lineitem  (cost=47659.98..1158656.79 rows=2258454 width=12) (actual time=1658.507..9630.402 rows=2247450 loops=1)
                       Recheck Cond: ((l_shipdate >= '1994-07-01'::date) AND (l_shipdate < '1994-09-29 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=14448 read=650942
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47095.37 rows=2258454 width=0) (actual time=1351.019..1351.019 rows=2272582 loops=1)
                             Index Cond: ((l_shipdate >= '1994-07-01'::date) AND (l_shipdate < '1994-09-29 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=6145 read=1
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.074..3.653 rows=7995 loops=1)
         Buffers: shared hit=225
   ->  Sort  (cost=1198484.86..1198494.18 rows=3729 width=12) (actual time=25794.794..25794.794 rows=1 loops=1)
         Sort Key: revenue3.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=55925 read=1274856 dirtied=102 written=721
         ->  Subquery Scan on revenue3  (cost=1198179.74..1198263.64 rows=3729 width=12) (actual time=25793.884..25794.762 rows=1 loops=1)
               Buffers: shared hit=55925 read=1274856 dirtied=102 written=721
               ->  HashAggregate  (cost=1198179.74..1198226.35 rows=3729 width=12) (actual time=25793.882..25794.758 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=55925 read=1274856 dirtied=102 written=721
                     ->  Bitmap Heap Scan on lineitem  (cost=47659.98..1158656.79 rows=2258454 width=12) (actual time=1682.193..9961.288 rows=2247450 loops=1)
                           Recheck Cond: ((l_shipdate >= '1994-07-01'::date) AND (l_shipdate < '1994-09-29 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=41477 read=623914 dirtied=102 written=721
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47095.37 rows=2258454 width=0) (actual time=1302.560..1302.560 rows=2272582 loops=1)
                                 Index Cond: ((l_shipdate >= '1994-07-01'::date) AND (l_shipdate < '1994-09-29 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6147
 Total runtime: 25814.370 ms
(33 rows)

drop view revenue3;
DROP VIEW
COMMIT;
COMMIT