BEGIN;
BEGIN
create or replace view revenue15 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1997-08-01'
		and l_shipdate < date'1997-08-01' + 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,
	revenue15
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue15
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2379281.73..2384379.48 rows=3752 width=79) (actual time=33223.508..33223.510 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue15.supplier_no)
   Buffers: shared hit=516435 read=813091 dirtied=652 written=674
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1181001.39..1181001.40 rows=1 width=8) (actual time=13843.552..13843.552 rows=1 loops=1)
           Buffers: shared hit=428733 read=236014 written=81
           ->  HashAggregate  (cost=1180916.97..1180954.49 rows=3752 width=12) (actual time=13772.064..13833.150 rows=100000 loops=1)
                 Buffers: shared hit=428733 read=236014 written=81
                 ->  Bitmap Heap Scan on lineitem  (cost=48016.97..1158175.37 rows=2274160 width=12) (actual time=1945.590..9974.391 rows=2244969 loops=1)
                       Recheck Cond: ((l_shipdate >= '1997-08-01'::date) AND (l_shipdate < '1997-10-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=428733 read=236014 written=81
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47448.43 rows=2274160 width=0) (actual time=1581.729..1581.729 rows=2265310 loops=1)
                             Index Cond: ((l_shipdate >= '1997-08-01'::date) AND (l_shipdate < '1997-10-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=1 read=6132
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.095..0.424 rows=973 loops=1)
         Buffers: shared hit=30 read=1
   ->  Sort  (cost=1198280.34..1198289.72 rows=3752 width=12) (actual time=33222.952..33222.952 rows=1 loops=1)
         Sort Key: revenue15.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=516405 read=813090 dirtied=652 written=674
         ->  Subquery Scan on revenue15  (cost=1197973.17..1198057.59 rows=3752 width=12) (actual time=33202.591..33222.920 rows=1 loops=1)
               Buffers: shared hit=516405 read=813090 dirtied=652 written=674
               ->  HashAggregate  (cost=1197973.17..1198020.07 rows=3752 width=12) (actual time=33202.588..33222.914 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=516405 read=813090 dirtied=652 written=674
                     ->  Bitmap Heap Scan on lineitem  (cost=48016.97..1158175.37 rows=2274160 width=12) (actual time=2223.942..15376.430 rows=2244969 loops=1)
                           Recheck Cond: ((l_shipdate >= '1997-08-01'::date) AND (l_shipdate < '1997-10-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=87672 read=577076 dirtied=652 written=593
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47448.43 rows=2274160 width=0) (actual time=1824.233..1824.233 rows=2265310 loops=1)
                                 Index Cond: ((l_shipdate >= '1997-08-01'::date) AND (l_shipdate < '1997-10-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=6 read=6128
 Total runtime: 33238.364 ms
(33 rows)

drop view revenue15;
DROP VIEW
COMMIT;
COMMIT