BEGIN;
BEGIN
create or replace view revenue10 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1994-08-01'
		and l_shipdate < date'1994-08-01' + 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,
	revenue10
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue10
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2358962.42..2364059.72 rows=3723 width=79) (actual time=59139.408..59139.411 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue10.supplier_no)
   Buffers: shared hit=962828 read=356872 dirtied=201 written=83
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1170981.74..1170981.75 rows=1 width=8) (actual time=25143.376..25143.376 rows=1 loops=1)
           Buffers: shared hit=424341 read=234853
           ->  HashAggregate  (cost=1170897.97..1170935.20 rows=3723 width=12) (actual time=25068.464..25129.885 rows=100000 loops=1)
                 Buffers: shared hit=424341 read=234853
                 ->  Bitmap Heap Scan on lineitem  (cost=47424.92..1148527.15 rows=2237082 width=12) (actual time=1912.130..20825.165 rows=2247704 loops=1)
                       Recheck Cond: ((l_shipdate >= '1994-08-01'::date) AND (l_shipdate < '1994-10-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=424341 read=234853
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46865.65 rows=2237082 width=0) (actual time=1571.728..1571.728 rows=2249910 loops=1)
                             Index Cond: ((l_shipdate >= '1994-08-01'::date) AND (l_shipdate < '1994-10-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=1 read=6139
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=1.974..18.372 rows=47970 loops=1)
         Buffers: shared hit=1311
   ->  Sort  (cost=1187980.67..1187989.98 rows=3723 width=12) (actual time=59116.046..59116.047 rows=1 loops=1)
         Sort Key: revenue10.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=961517 read=356872 dirtied=201 written=83
         ->  Subquery Scan on revenue10  (cost=1187676.08..1187759.85 rows=3723 width=12) (actual time=59114.411..59115.990 rows=1 loops=1)
               Buffers: shared hit=961517 read=356872 dirtied=201 written=83
               ->  HashAggregate  (cost=1187676.08..1187722.62 rows=3723 width=12) (actual time=59114.409..59115.987 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=961517 read=356872 dirtied=201 written=83
                     ->  Bitmap Heap Scan on lineitem  (cost=47424.92..1148527.15 rows=2237082 width=12) (actual time=2880.794..29525.210 rows=2247704 loops=1)
                           Recheck Cond: ((l_shipdate >= '1994-08-01'::date) AND (l_shipdate < '1994-10-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=537176 read=122019 dirtied=201 written=83
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46865.65 rows=2237082 width=0) (actual time=2472.042..2472.042 rows=2249910 loops=1)
                                 Index Cond: ((l_shipdate >= '1994-08-01'::date) AND (l_shipdate < '1994-10-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=4 read=6137
 Total runtime: 59151.870 ms
(33 rows)

drop view revenue10;
DROP VIEW
COMMIT;
COMMIT