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 >= '1993-09-01'
		and l_shipdate < date'1993-09-01' + 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,
	revenue4
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue4
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2366871.15..2371969.28 rows=3778 width=79) (actual time=94439.872..94439.876 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue4.supplier_no)
   Buffers: shared hit=596080 read=727004 written=17559
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1174793.19..1174793.20 rows=1 width=8) (actual time=38822.905..38822.905 rows=1 loops=1)
           Buffers: shared hit=405011 read=255538 written=15065
           ->  HashAggregate  (cost=1174708.18..1174745.96 rows=3778 width=12) (actual time=38767.817..38810.716 rows=100000 loops=1)
                 Buffers: shared hit=405011 read=255538 written=15065
                 ->  Bitmap Heap Scan on lineitem  (cost=48174.56..1151961.13 rows=2274705 width=12) (actual time=2330.357..34091.363 rows=2248873 loops=1)
                       Recheck Cond: ((l_shipdate >= '1993-09-01'::date) AND (l_shipdate < '1993-11-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=405011 read=255538 written=15065
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47605.88 rows=2274705 width=0) (actual time=1883.063..1883.063 rows=2256439 loops=1)
                             Index Cond: ((l_shipdate >= '1993-09-01'::date) AND (l_shipdate < '1993-11-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=4296 read=1845 written=104
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.141..94.905 rows=72980 loops=1)
         Buffers: shared hit=1984 read=1
   ->  Sort  (cost=1192077.95..1192087.40 rows=3778 width=12) (actual time=94333.385..94333.386 rows=1 loops=1)
         Sort Key: revenue4.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=594096 read=727003 written=17559
         ->  Subquery Scan on revenue4  (cost=1191768.47..1191853.47 rows=3778 width=12) (actual time=94302.261..94333.344 rows=1 loops=1)
               Buffers: shared hit=594096 read=727003 written=17559
               ->  HashAggregate  (cost=1191768.47..1191815.69 rows=3778 width=12) (actual time=94302.259..94333.339 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=594096 read=727003 written=17559
                     ->  Bitmap Heap Scan on lineitem  (cost=48174.56..1151961.13 rows=2274705 width=12) (actual time=5254.888..50347.104 rows=2248873 loops=1)
                           Recheck Cond: ((l_shipdate >= '1993-09-01'::date) AND (l_shipdate < '1993-11-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=189085 read=471465 written=2494
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47605.88 rows=2274705 width=0) (actual time=4806.517..4806.517 rows=2255361 loops=1)
                                 Index Cond: ((l_shipdate >= '1993-09-01'::date) AND (l_shipdate < '1993-11-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6142
 Total runtime: 94464.653 ms
(33 rows)

drop view revenue4;
DROP VIEW
COMMIT;
COMMIT