BEGIN;
BEGIN
create or replace view revenue13 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1997-05-01'
		and l_shipdate < date'1997-05-01' + 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,
	revenue13
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue13
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2394950.41..2400049.17 rows=3820 width=79) (actual time=37591.167..37591.171 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue13.supplier_no)
   Buffers: shared hit=436257 read=901211 written=420
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1188636.29..1188636.30 rows=1 width=8) (actual time=17588.324..17588.325 rows=1 loops=1)
           Buffers: shared hit=224203 read=444049
           ->  HashAggregate  (cost=1188550.34..1188588.54 rows=3820 width=12) (actual time=17503.912..17572.213 rows=100000 loops=1)
                 Buffers: shared hit=224203 read=444049
                 ->  Bitmap Heap Scan on lineitem  (cost=48999.89..1165282.96 rows=2326738 width=12) (actual time=2226.964..13389.131 rows=2248687 loops=1)
                       Recheck Cond: ((l_shipdate >= '1997-05-01'::date) AND (l_shipdate < '1997-07-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=224203 read=444049
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..48418.21 rows=2326738 width=0) (actual time=1804.516..1804.516 rows=2279821 loops=1)
                             Index Cond: ((l_shipdate >= '1997-05-01'::date) AND (l_shipdate < '1997-07-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=1 read=6139
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.058..23.229 rows=34927 loops=1)
         Buffers: shared hit=963
   ->  Sort  (cost=1206314.11..1206323.66 rows=3820 width=12) (actual time=37562.142..37562.143 rows=1 loops=1)
         Sort Key: revenue13.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=435294 read=901211 written=420
         ->  Subquery Scan on revenue13  (cost=1206000.88..1206086.83 rows=3820 width=12) (actual time=37535.055..37562.109 rows=1 loops=1)
               Buffers: shared hit=435294 read=901211 written=420
               ->  HashAggregate  (cost=1206000.88..1206048.63 rows=3820 width=12) (actual time=37535.052..37562.103 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=435294 read=901211 written=420
                     ->  Bitmap Heap Scan on lineitem  (cost=48999.89..1165282.96 rows=2326738 width=12) (actual time=1951.841..15819.009 rows=2248687 loops=1)
                           Recheck Cond: ((l_shipdate >= '1997-05-01'::date) AND (l_shipdate < '1997-07-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=211091 read=457162 written=420
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..48418.21 rows=2326738 width=0) (actual time=1555.048..1555.048 rows=2279821 loops=1)
                                 Index Cond: ((l_shipdate >= '1997-05-01'::date) AND (l_shipdate < '1997-07-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=2 read=6139
 Total runtime: 37614.896 ms
(33 rows)

drop view revenue13;
DROP VIEW
COMMIT;
COMMIT