BEGIN;
BEGIN
create or replace view revenue4 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1997-02-01'
		and l_shipdate < date'1997-02-01' + 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,
	revenue4
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue4
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2367103.71..2372201.91 rows=3783 width=79) (actual time=68857.824..68857.826 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue4.supplier_no)
   Buffers: shared hit=190186 read=1133392 written=36455
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1174900.45..1174900.46 rows=1 width=8) (actual time=33536.831..33536.831 rows=1 loops=1)
           Buffers: shared hit=69932 read=590837 written=36341
           ->  HashAggregate  (cost=1174815.34..1174853.17 rows=3783 width=12) (actual time=33455.517..33518.949 rows=100000 loops=1)
                 Buffers: shared hit=69932 read=590837 written=36341
                 ->  Bitmap Heap Scan on lineitem  (cost=48222.74..1152044.70 rows=2277064 width=12) (actual time=3011.392..29017.032 rows=2249672 loops=1)
                       Recheck Cond: ((l_shipdate >= '1997-02-01'::date) AND (l_shipdate < '1997-05-02 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=69932 read=590837 written=36341
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47653.47 rows=2277064 width=0) (actual time=2566.831..2566.831 rows=2257752 loops=1)
                             Index Cond: ((l_shipdate >= '1997-02-01'::date) AND (l_shipdate < '1997-05-02 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=1075 read=5069 written=402
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.106..50.950 rows=74945 loops=1)
         Buffers: shared hit=2039
   ->  Sort  (cost=1192203.24..1192212.70 rows=3783 width=12) (actual time=68795.036..68795.037 rows=1 loops=1)
         Sort Key: revenue4.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=188147 read=1133392 written=36455
         ->  Subquery Scan on revenue4  (cost=1191893.32..1191978.43 rows=3783 width=12) (actual time=68764.843..68795.000 rows=1 loops=1)
               Buffers: shared hit=188147 read=1133392 written=36455
               ->  HashAggregate  (cost=1191893.32..1191940.60 rows=3783 width=12) (actual time=68764.841..68794.995 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=188147 read=1133392 written=36455
                     ->  Bitmap Heap Scan on lineitem  (cost=48222.74..1152044.70 rows=2277064 width=12) (actual time=2648.180..30354.931 rows=2249672 loops=1)
                           Recheck Cond: ((l_shipdate >= '1997-02-01'::date) AND (l_shipdate < '1997-05-02 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=118215 read=542555 written=114
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47653.47 rows=2277064 width=0) (actual time=2136.902..2136.902 rows=2256459 loops=1)
                                 Index Cond: ((l_shipdate >= '1997-02-01'::date) AND (l_shipdate < '1997-05-02 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=2 read=6143
 Total runtime: 68888.441 ms
(33 rows)

drop view revenue4;
DROP VIEW
COMMIT;
COMMIT