BEGIN;
BEGIN
create or replace view revenue8 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1994-04-01'
		and l_shipdate < date'1994-04-01' + 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,
	revenue8
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue8
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2358703.72..2363800.87 rows=3712 width=79) (actual time=97500.006..97500.009 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue8.supplier_no)
   Buffers: shared hit=747009 read=572644 dirtied=5 written=28931
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1170875.81..1170875.82 rows=1 width=8) (actual time=41943.535..41943.535 rows=1 loops=1)
           Buffers: shared hit=464346 read=194742 written=42
           ->  HashAggregate  (cost=1170792.29..1170829.41 rows=3712 width=12) (actual time=41888.675..41931.375 rows=100000 loops=1)
                 Buffers: shared hit=464346 read=194742 written=42
                 ->  Bitmap Heap Scan on lineitem  (cost=47293.91..1148482.94 rows=2230935 width=12) (actual time=2666.229..37097.301 rows=2243180 loops=1)
                       Recheck Cond: ((l_shipdate >= '1994-04-01'::date) AND (l_shipdate < '1994-06-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=464346 read=194742 written=42
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46736.18 rows=2230935 width=0) (actual time=2285.508..2285.508 rows=2250325 loops=1)
                             Index Cond: ((l_shipdate >= '1994-04-01'::date) AND (l_shipdate < '1994-06-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=4 read=6130
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.054..52.629 rows=53995 loops=1)
         Buffers: shared hit=1476
   ->  Sort  (cost=1187827.90..1187837.18 rows=3712 width=12) (actual time=97439.209..97439.209 rows=1 loops=1)
         Sort Key: revenue8.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=745533 read=572644 dirtied=5 written=28931
         ->  Subquery Scan on revenue8  (cost=1187524.30..1187607.82 rows=3712 width=12) (actual time=97429.354..97439.173 rows=1 loops=1)
               Buffers: shared hit=745533 read=572644 dirtied=5 written=28931
               ->  HashAggregate  (cost=1187524.30..1187570.70 rows=3712 width=12) (actual time=97429.351..97439.168 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=745533 read=572644 dirtied=5 written=28931
                     ->  Bitmap Heap Scan on lineitem  (cost=47293.91..1148482.94 rows=2230935 width=12) (actual time=3104.151..50266.811 rows=2243180 loops=1)
                           Recheck Cond: ((l_shipdate >= '1994-04-01'::date) AND (l_shipdate < '1994-06-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=281187 read=377902 dirtied=5 written=28889
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46736.18 rows=2230935 width=0) (actual time=2655.535..2655.535 rows=2248410 loops=1)
                                 Index Cond: ((l_shipdate >= '1994-04-01'::date) AND (l_shipdate < '1994-06-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=456 read=5679
 Total runtime: 97518.072 ms
(33 rows)

drop view revenue8;
DROP VIEW
COMMIT;
COMMIT