BEGIN;
BEGIN
create or replace view revenue5 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1997-07-01'
		and l_shipdate < date'1997-07-01' + 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,
	revenue5
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue5
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2364723.21..2369821.28 rows=3774 width=79) (actual time=37541.662..37541.667 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue5.supplier_no)
   Buffers: shared hit=668803 read=653548 written=20
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1173722.40..1173722.41 rows=1 width=8) (actual time=18284.031..18284.031 rows=1 loops=1)
           Buffers: shared hit=348341 read=312340
           ->  HashAggregate  (cost=1173637.49..1173675.23 rows=3774 width=12) (actual time=18186.145..18265.625 rows=100000 loops=1)
                 Buffers: shared hit=348341 read=312340
                 ->  Bitmap Heap Scan on lineitem  (cost=48182.21..1150898.58 rows=2273891 width=12) (actual time=1939.090..14048.508 rows=2247022 loops=1)
                       Recheck Cond: ((l_shipdate >= '1997-07-01'::date) AND (l_shipdate < '1997-09-29 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=348341 read=312340
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47613.74 rows=2273891 width=0) (actual time=1518.165..1518.165 rows=2251572 loops=1)
                             Index Cond: ((l_shipdate >= '1997-07-01'::date) AND (l_shipdate < '1997-09-29 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6137
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.104..22.905 rows=35977 loops=1)
         Buffers: shared hit=987 read=1
   ->  Sort  (cost=1191000.80..1191010.23 rows=3774 width=12) (actual time=37512.465..37512.466 rows=1 loops=1)
         Sort Key: revenue5.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=667816 read=653547 written=20
         ->  Subquery Scan on revenue5  (cost=1190691.67..1190776.58 rows=3774 width=12) (actual time=37480.242..37512.424 rows=1 loops=1)
               Buffers: shared hit=667816 read=653547 written=20
               ->  HashAggregate  (cost=1190691.67..1190738.84 rows=3774 width=12) (actual time=37480.240..37512.420 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=667816 read=653547 written=20
                     ->  Bitmap Heap Scan on lineitem  (cost=48182.21..1150898.58 rows=2273891 width=12) (actual time=2206.030..15225.687 rows=2247022 loops=1)
                           Recheck Cond: ((l_shipdate >= '1997-07-01'::date) AND (l_shipdate < '1997-09-29 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=319475 read=341207 written=20
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47613.74 rows=2273891 width=0) (actual time=1823.590..1823.590 rows=2251572 loops=1)
                                 Index Cond: ((l_shipdate >= '1997-07-01'::date) AND (l_shipdate < '1997-09-29 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6138 written=1
 Total runtime: 37563.282 ms
(33 rows)

drop view revenue5;
DROP VIEW
COMMIT;
COMMIT