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 >= '1995-09-01'
		and l_shipdate < date'1995-09-01' + 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=2369992.90..2375090.72 rows=3757 width=79) (actual time=28476.855..28476.858 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue2.supplier_no)
   Buffers: shared hit=367344 read=959643 written=9706
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1176393.80..1176393.81 rows=1 width=8) (actual time=13337.404..13337.404 rows=1 loops=1)
           Buffers: shared hit=138391 read=523772 written=890
           ->  HashAggregate  (cost=1176309.26..1176346.83 rows=3757 width=12) (actual time=13272.111..13326.489 rows=100000 loops=1)
                 Buffers: shared hit=138391 read=523772 written=890
                 ->  Bitmap Heap Scan on lineitem  (cost=47903.86..1153666.30 rows=2264296 width=12) (actual time=1805.608..9930.846 rows=2247629 loops=1)
                       Recheck Cond: ((l_shipdate >= '1995-09-01'::date) AND (l_shipdate < '1995-11-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=138391 read=523772 written=890
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47337.79 rows=2264296 width=0) (actual time=1408.925..1408.925 rows=2258843 loops=1)
                             Index Cond: ((l_shipdate >= '1995-09-01'::date) AND (l_shipdate < '1995-11-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=3 read=6136
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.089..36.672 rows=97885 loops=1)
         Buffers: shared hit=2659 read=1
   ->  Sort  (cost=1193599.09..1193608.49 rows=3757 width=12) (actual time=28429.787..28429.787 rows=1 loops=1)
         Sort Key: revenue2.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=364685 read=959642 written=9706
         ->  Subquery Scan on revenue2  (cost=1193291.48..1193376.02 rows=3757 width=12) (actual time=28402.726..28429.750 rows=1 loops=1)
               Buffers: shared hit=364685 read=959642 written=9706
               ->  HashAggregate  (cost=1193291.48..1193338.45 rows=3757 width=12) (actual time=28402.723..28429.745 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=364685 read=959642 written=9706
                     ->  Bitmap Heap Scan on lineitem  (cost=47903.86..1153666.30 rows=2264296 width=12) (actual time=2097.208..11342.751 rows=2247629 loops=1)
                           Recheck Cond: ((l_shipdate >= '1995-09-01'::date) AND (l_shipdate < '1995-11-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=226294 read=435870 written=8816
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47337.79 rows=2264296 width=0) (actual time=1671.058..1671.058 rows=2258843 loops=1)
                                 Index Cond: ((l_shipdate >= '1995-09-01'::date) AND (l_shipdate < '1995-11-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=492 read=5648 written=1006
 Total runtime: 28491.433 ms
(33 rows)

drop view revenue2;
DROP VIEW
COMMIT;
COMMIT