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 >= '1993-10-01'
		and l_shipdate < date'1993-10-01' + 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=2370249.40..2375347.47 rows=3774 width=79) (actual time=28333.467..28333.470 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue2.supplier_no)
   Buffers: shared hit=539435 read=783677 dirtied=661 written=47520
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1176486.45..1176486.46 rows=1 width=8) (actual time=11885.521..11885.521 rows=1 loops=1)
           Buffers: shared hit=401986 read=259276 written=48
           ->  HashAggregate  (cost=1176401.53..1176439.27 rows=3774 width=12) (actual time=11806.397..11873.829 rows=100000 loops=1)
                 Buffers: shared hit=401986 read=259276 written=48
                 ->  Bitmap Heap Scan on lineitem  (cost=48111.61..1153665.16 rows=2273637 width=12) (actual time=1301.196..8161.468 rows=2243968 loops=1)
                       Recheck Cond: ((l_shipdate >= '1993-10-01'::date) AND (l_shipdate < '1993-12-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=401986 read=259276 written=48
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47543.20 rows=2273637 width=0) (actual time=1019.618..1019.618 rows=2257078 loops=1)
                             Index Cond: ((l_shipdate >= '1993-10-01'::date) AND (l_shipdate < '1993-12-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=3 read=6131
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.077..8.712 rows=20959 loops=1)
         Buffers: shared hit=587
   ->  Sort  (cost=1193762.94..1193772.37 rows=3774 width=12) (actual time=28322.552..28322.552 rows=1 loops=1)
         Sort Key: revenue2.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=538848 read=783677 dirtied=661 written=47520
         ->  Subquery Scan on revenue2  (cost=1193453.81..1193538.73 rows=3774 width=12) (actual time=28285.004..28322.518 rows=1 loops=1)
               Buffers: shared hit=538848 read=783677 dirtied=661 written=47520
               ->  HashAggregate  (cost=1193453.81..1193500.99 rows=3774 width=12) (actual time=28285.001..28322.513 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=538848 read=783677 dirtied=661 written=47520
                     ->  Bitmap Heap Scan on lineitem  (cost=48111.61..1153665.16 rows=2273637 width=12) (actual time=1926.784..12742.332 rows=2243968 loops=1)
                           Recheck Cond: ((l_shipdate >= '1993-10-01'::date) AND (l_shipdate < '1993-12-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=136862 read=524401 dirtied=661 written=47472
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47543.20 rows=2273637 width=0) (actual time=1637.651..1637.651 rows=2256624 loops=1)
                                 Index Cond: ((l_shipdate >= '1993-10-01'::date) AND (l_shipdate < '1993-12-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=1624 read=4511 written=71
 Total runtime: 28346.678 ms
(33 rows)

drop view revenue2;
DROP VIEW
COMMIT;
COMMIT