BEGIN;
BEGIN
create or replace view revenue12 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1996-02-01'
		and l_shipdate < date'1996-02-01' + 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,
	revenue12
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue12
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2386927.81..2392024.51 rows=3682 width=79) (actual time=32423.685..32423.692 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue12.supplier_no)
   Buffers: shared hit=674423 read=661970 dirtied=643 written=18130
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1184931.09..1184931.10 rows=1 width=8) (actual time=16626.980..16626.980 rows=1 loops=1)
           Buffers: shared hit=195983 read=471367 dirtied=643 written=18130
           ->  HashAggregate  (cost=1184848.24..1184885.06 rows=3682 width=12) (actual time=16552.615..16616.219 rows=100000 loops=1)
                 Buffers: shared hit=195983 read=471367 dirtied=643 written=18130
                 ->  Bitmap Heap Scan on lineitem  (cost=47307.79..1162384.86 rows=2246338 width=12) (actual time=2023.507..12656.243 rows=2243258 loops=1)
                       Recheck Cond: ((l_shipdate >= '1996-02-01'::date) AND (l_shipdate < '1996-05-01 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=195983 read=471367 dirtied=643 written=18130
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46746.21 rows=2246338 width=0) (actual time=1593.800..1593.800 rows=2274808 loops=1)
                             Index Cond: ((l_shipdate >= '1996-02-01'::date) AND (l_shipdate < '1996-05-01 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=1 read=6126
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.091..26.553 rows=61971 loops=1)
         Buffers: shared hit=1691 read=1
   ->  Sort  (cost=1201996.71..1202005.92 rows=3682 width=12) (actual time=32390.648..32390.650 rows=1 loops=1)
         Sort Key: revenue12.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=672732 read=661969 dirtied=643 written=18130
         ->  Subquery Scan on revenue12  (cost=1201695.78..1201778.62 rows=3682 width=12) (actual time=32359.600..32390.607 rows=1 loops=1)
               Buffers: shared hit=672732 read=661969 dirtied=643 written=18130
               ->  HashAggregate  (cost=1201695.78..1201741.80 rows=3682 width=12) (actual time=32359.598..32390.602 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=672732 read=661969 dirtied=643 written=18130
                     ->  Bitmap Heap Scan on lineitem  (cost=47307.79..1162384.86 rows=2246338 width=12) (actual time=2426.191..11599.164 rows=2243258 loops=1)
                           Recheck Cond: ((l_shipdate >= '1996-02-01'::date) AND (l_shipdate < '1996-05-01 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=476749 read=190602
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46746.21 rows=2246338 width=0) (actual time=2010.924..2010.924 rows=2274808 loops=1)
                                 Index Cond: ((l_shipdate >= '1996-02-01'::date) AND (l_shipdate < '1996-05-01 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6128
 Total runtime: 32441.817 ms
(33 rows)

drop view revenue12;
DROP VIEW
COMMIT;
COMMIT