BEGIN;
BEGIN
create or replace view revenue9 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1997-03-01'
		and l_shipdate < date'1997-03-01' + 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,
	revenue9
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue9
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2369217.03..2374314.09 rows=3707 width=79) (actual time=30768.146..30768.148 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue9.supplier_no)
   Buffers: shared hit=599890 read=726614 dirtied=1054 written=459
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1176114.36..1176114.37 rows=1 width=8) (actual time=15606.619..15606.619 rows=1 loops=1)
           Buffers: shared hit=267871 read=395241 written=9
           ->  HashAggregate  (cost=1176030.96..1176068.03 rows=3707 width=12) (actual time=15533.134..15595.128 rows=100000 loops=1)
                 Buffers: shared hit=267871 read=395241 written=9
                 ->  Bitmap Heap Scan on lineitem  (cost=47279.83..1153672.91 rows=2235805 width=12) (actual time=2171.610..11527.512 rows=2250161 loops=1)
                       Recheck Cond: ((l_shipdate >= '1997-03-01'::date) AND (l_shipdate < '1997-05-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=267871 read=395241 written=9
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46720.88 rows=2235805 width=0) (actual time=1732.504..1732.504 rows=2263501 loops=1)
                             Index Cond: ((l_shipdate >= '1997-03-01'::date) AND (l_shipdate < '1997-05-30 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6145 written=6
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.086..4.122 rows=9914 loops=1)
         Buffers: shared hit=279
   ->  Sort  (cost=1193102.65..1193111.92 rows=3707 width=12) (actual time=30762.973..30762.973 rows=1 loops=1)
         Sort Key: revenue9.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=599611 read=726614 dirtied=1054 written=459
         ->  Subquery Scan on revenue9  (cost=1192799.49..1192882.90 rows=3707 width=12) (actual time=30741.869..30762.918 rows=1 loops=1)
               Buffers: shared hit=599611 read=726614 dirtied=1054 written=459
               ->  HashAggregate  (cost=1192799.49..1192845.83 rows=3707 width=12) (actual time=30741.868..30762.916 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=599611 read=726614 dirtied=1054 written=459
                     ->  Bitmap Heap Scan on lineitem  (cost=47279.83..1153672.91 rows=2235805 width=12) (actual time=1613.915..11278.460 rows=2250161 loops=1)
                           Recheck Cond: ((l_shipdate >= '1997-03-01'::date) AND (l_shipdate < '1997-05-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=331740 read=331373 dirtied=1054 written=450
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46720.88 rows=2235805 width=0) (actual time=1316.446..1316.446 rows=2263501 loops=1)
                                 Index Cond: ((l_shipdate >= '1997-03-01'::date) AND (l_shipdate < '1997-05-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6146
 Total runtime: 30780.473 ms
(33 rows)

drop view revenue9;
DROP VIEW
COMMIT;
COMMIT