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 >= '1997-09-01'
		and l_shipdate < date'1997-09-01' + 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=2362118.00..2367215.68 rows=3748 width=79) (actual time=48892.626..48892.629 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue8.supplier_no)
   Buffers: shared hit=755618 read=565170 dirtied=270 written=5222
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1172496.74..1172496.75 rows=1 width=8) (actual time=22110.538..22110.538 rows=1 loops=1)
           Buffers: shared hit=355805 read=304173 written=46
           ->  HashAggregate  (cost=1172412.41..1172449.89 rows=3748 width=12) (actual time=22033.179..22098.970 rows=100000 loops=1)
                 Buffers: shared hit=355805 read=304173 written=46
                 ->  Bitmap Heap Scan on lineitem  (cost=47758.28..1149876.36 rows=2253605 width=12) (actual time=2532.745..17717.289 rows=2243246 loops=1)
                       Recheck Cond: ((l_shipdate >= '1997-09-01'::date) AND (l_shipdate < '1997-11-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=355805 read=304173 written=46
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47194.88 rows=2253605 width=0) (actual time=2075.426..2075.426 rows=2249932 loops=1)
                             Index Cond: ((l_shipdate >= '1997-09-01'::date) AND (l_shipdate < '1997-11-30 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6133
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.059..12.100 rows=29990 loops=1)
         Buffers: shared hit=831
   ->  Sort  (cost=1189621.25..1189630.62 rows=3748 width=12) (actual time=48877.461..48877.462 rows=1 loops=1)
         Sort Key: revenue8.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=754787 read=565170 dirtied=270 written=5222
         ->  Subquery Scan on revenue8  (cost=1189314.44..1189398.77 rows=3748 width=12) (actual time=48856.857..48877.431 rows=1 loops=1)
               Buffers: shared hit=754787 read=565170 dirtied=270 written=5222
               ->  HashAggregate  (cost=1189314.44..1189361.29 rows=3748 width=12) (actual time=48856.854..48877.426 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=754787 read=565170 dirtied=270 written=5222
                     ->  Bitmap Heap Scan on lineitem  (cost=47758.28..1149876.36 rows=2253605 width=12) (actual time=3752.948..22357.591 rows=2243246 loops=1)
                           Recheck Cond: ((l_shipdate >= '1997-09-01'::date) AND (l_shipdate < '1997-11-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=398982 read=260997 dirtied=270 written=5176
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47194.88 rows=2253605 width=0) (actual time=3347.082..3347.082 rows=2249603 loops=1)
                                 Index Cond: ((l_shipdate >= '1997-09-01'::date) AND (l_shipdate < '1997-11-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=1543 read=4591 written=223
 Total runtime: 48920.081 ms
(33 rows)

drop view revenue8;
DROP VIEW
COMMIT;
COMMIT