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 >= '1995-03-01'
		and l_shipdate < date'1995-03-01' + 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=2392684.40..2397782.72 rows=3790 width=79) (actual time=26356.746..26356.748 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue12.supplier_no)
   Buffers: shared hit=1018376 read=320024 written=3
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1187589.61..1187589.62 rows=1 width=8) (actual time=13356.724..13356.724 rows=1 loops=1)
           Buffers: shared hit=442412 read=225429
           ->  HashAggregate  (cost=1187504.34..1187542.24 rows=3790 width=12) (actual time=13287.927..13343.205 rows=100000 loops=1)
                 Buffers: shared hit=442412 read=225429
                 ->  Bitmap Heap Scan on lineitem  (cost=48522.69..1164464.48 rows=2303986 width=12) (actual time=2137.549..9461.449 rows=2249613 loops=1)
                       Recheck Cond: ((l_shipdate >= '1995-03-01'::date) AND (l_shipdate < '1995-05-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=442412 read=225429
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47946.69 rows=2303986 width=0) (actual time=1720.885..1720.885 rows=2281299 loops=1)
                             Index Cond: ((l_shipdate >= '1995-03-01'::date) AND (l_shipdate < '1995-05-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=1 read=6145
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.081..42.649 rows=99913 loops=1)
         Buffers: shared hit=2717
   ->  Sort  (cost=1205094.78..1205104.26 rows=3790 width=12) (actual time=26303.692..26303.692 rows=1 loops=1)
         Sort Key: revenue12.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=1015659 read=320024 written=3
         ->  Subquery Scan on revenue12  (cost=1204784.23..1204869.51 rows=3790 width=12) (actual time=26296.789..26303.649 rows=1 loops=1)
               Buffers: shared hit=1015659 read=320024 written=3
               ->  HashAggregate  (cost=1204784.23..1204831.61 rows=3790 width=12) (actual time=26296.786..26303.643 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=1015659 read=320024 written=3
                     ->  Bitmap Heap Scan on lineitem  (cost=48522.69..1164464.48 rows=2303986 width=12) (actual time=2245.508..9035.518 rows=2249613 loops=1)
                           Recheck Cond: ((l_shipdate >= '1995-03-01'::date) AND (l_shipdate < '1995-05-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=573247 read=94595 written=3
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47946.69 rows=2303986 width=0) (actual time=1715.960..1715.960 rows=2281299 loops=1)
                                 Index Cond: ((l_shipdate >= '1995-03-01'::date) AND (l_shipdate < '1995-05-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=2 read=6145
 Total runtime: 26371.823 ms
(33 rows)

drop view revenue12;
DROP VIEW
COMMIT;
COMMIT