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 >= '1995-05-01'
		and l_shipdate < date'1995-05-01' + 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=2372304.33..2377402.15 rows=3757 width=79) (actual time=25194.782..25194.786 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue9.supplier_no)
   Buffers: shared hit=790033 read=537475 dirtied=81 written=17757
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1177540.50..1177540.51 rows=1 width=8) (actual time=12263.658..12263.658 rows=1 loops=1)
           Buffers: shared hit=405581 read=256813 written=4061
           ->  HashAggregate  (cost=1177455.97..1177493.54 rows=3757 width=12) (actual time=12157.033..12246.463 rows=100000 loops=1)
                 Buffers: shared hit=405581 read=256813 written=4061
                 ->  Bitmap Heap Scan on lineitem  (cost=47932.49..1154788.98 rows=2266699 width=12) (actual time=2520.567..8914.985 rows=2243488 loops=1)
                       Recheck Cond: ((l_shipdate >= '1995-05-01'::date) AND (l_shipdate < '1995-07-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=405581 read=256813 written=4061
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47365.82 rows=2266699 width=0) (actual time=2172.928..2172.928 rows=2261626 loops=1)
                             Index Cond: ((l_shipdate >= '1995-05-01'::date) AND (l_shipdate < '1995-07-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=472 read=5663 written=455
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.100..43.359 rows=99984 loops=1)
         Buffers: shared hit=2716 read=3
   ->  Sort  (cost=1194763.82..1194773.22 rows=3757 width=12) (actual time=25140.553..25140.554 rows=1 loops=1)
         Sort Key: revenue9.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=787317 read=537472 dirtied=81 written=17757
         ->  Subquery Scan on revenue9  (cost=1194456.21..1194540.74 rows=3757 width=12) (actual time=25127.178..25140.506 rows=1 loops=1)
               Buffers: shared hit=787317 read=537472 dirtied=81 written=17757
               ->  HashAggregate  (cost=1194456.21..1194503.17 rows=3757 width=12) (actual time=25127.175..25140.499 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=787317 read=537472 dirtied=81 written=17757
                     ->  Bitmap Heap Scan on lineitem  (cost=47932.49..1154788.98 rows=2266699 width=12) (actual time=1516.819..9453.978 rows=2243488 loops=1)
                           Recheck Cond: ((l_shipdate >= '1995-05-01'::date) AND (l_shipdate < '1995-07-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=381736 read=280659 dirtied=81 written=13696
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47365.82 rows=2266699 width=0) (actual time=1058.800..1058.800 rows=2259315 loops=1)
                                 Index Cond: ((l_shipdate >= '1995-05-01'::date) AND (l_shipdate < '1995-07-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=3 read=6133
 Total runtime: 25212.081 ms
(33 rows)

drop view revenue9;
DROP VIEW
COMMIT;
COMMIT