BEGIN;
BEGIN
create or replace view revenue2 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1994-09-01'
		and l_shipdate < date'1994-09-01' + 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,
	revenue2
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue2
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2368726.92..2373824.27 rows=3726 width=79) (actual time=48645.553..48645.560 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue2.supplier_no)
   Buffers: shared hit=370763 read=954715 written=410
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1175809.46..1175809.47 rows=1 width=8) (actual time=24088.413..24088.414 rows=1 loops=1)
           Buffers: shared hit=145679 read=516404 written=297
           ->  HashAggregate  (cost=1175725.62..1175762.88 rows=3726 width=12) (actual time=23989.359..24072.272 rows=100000 loops=1)
                 Buffers: shared hit=145679 read=516404 written=297
                 ->  Bitmap Heap Scan on lineitem  (cost=47637.70..1153209.65 rows=2251597 width=12) (actual time=1789.976..19520.228 rows=2244870 loops=1)
                       Recheck Cond: ((l_shipdate >= '1994-09-01'::date) AND (l_shipdate < '1994-11-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=145679 read=516404 written=297
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47074.80 rows=2251597 width=0) (actual time=1500.437..1500.437 rows=2256375 loops=1)
                             Index Cond: ((l_shipdate >= '1994-09-01'::date) AND (l_shipdate < '1994-11-30 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6132
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.174..23.488 rows=47970 loops=1)
         Buffers: shared hit=1310 read=1
   ->  Sort  (cost=1192917.45..1192926.77 rows=3726 width=12) (actual time=48616.813..48616.816 rows=1 loops=1)
         Sort Key: revenue2.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=369453 read=954714 written=410
         ->  Subquery Scan on revenue2  (cost=1192612.60..1192696.44 rows=3726 width=12) (actual time=48613.863..48616.744 rows=1 loops=1)
               Buffers: shared hit=369453 read=954714 written=410
               ->  HashAggregate  (cost=1192612.60..1192659.18 rows=3726 width=12) (actual time=48613.858..48616.738 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=369453 read=954714 written=410
                     ->  Bitmap Heap Scan on lineitem  (cost=47637.70..1153209.65 rows=2251597 width=12) (actual time=2416.127..20129.965 rows=2244870 loops=1)
                           Recheck Cond: ((l_shipdate >= '1994-09-01'::date) AND (l_shipdate < '1994-11-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=223774 read=438310 written=113
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47074.80 rows=2251597 width=0) (actual time=2014.831..2014.831 rows=2256375 loops=1)
                                 Index Cond: ((l_shipdate >= '1994-09-01'::date) AND (l_shipdate < '1994-11-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6133
 Total runtime: 48660.590 ms
(33 rows)

drop view revenue2;
DROP VIEW
COMMIT;
COMMIT