BEGIN;
BEGIN
create or replace view revenue4 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1995-12-01'
		and l_shipdate < date'1995-12-01' + 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,
	revenue4
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue4
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2365076.85..2370174.59 rows=3752 width=79) (actual time=27822.879..27822.882 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue4.supplier_no)
   Buffers: shared hit=431033 read=889285 dirtied=378 written=137
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1173964.18..1173964.19 rows=1 width=8) (actual time=12550.637..12550.637 rows=1 loops=1)
           Buffers: shared hit=242381 read=417527 written=46
           ->  HashAggregate  (cost=1173879.76..1173917.28 rows=3752 width=12) (actual time=12459.622..12532.248 rows=100000 loops=1)
                 Buffers: shared hit=242381 read=417527 written=46
                 ->  Bitmap Heap Scan on lineitem  (cost=47794.66..1151312.12 rows=2256764 width=12) (actual time=1748.517..9027.373 rows=2242320 loops=1)
                       Recheck Cond: ((l_shipdate >= '1995-12-01'::date) AND (l_shipdate < '1996-02-29 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=242381 read=417527 written=46
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47230.47 rows=2256764 width=0) (actual time=1316.346..1316.346 rows=2249074 loops=1)
                             Index Cond: ((l_shipdate >= '1995-12-01'::date) AND (l_shipdate < '1996-02-29 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6125
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.054..7.514 rows=17822 loops=1)
         Buffers: shared hit=501
   ->  Sort  (cost=1191112.66..1191122.04 rows=3752 width=12) (actual time=27813.499..27813.501 rows=1 loops=1)
         Sort Key: revenue4.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=430532 read=889285 dirtied=378 written=137
         ->  Subquery Scan on revenue4  (cost=1190805.49..1190889.91 rows=3752 width=12) (actual time=27791.778..27813.463 rows=1 loops=1)
               Buffers: shared hit=430532 read=889285 dirtied=378 written=137
               ->  HashAggregate  (cost=1190805.49..1190852.39 rows=3752 width=12) (actual time=27791.775..27813.458 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=430532 read=889285 dirtied=378 written=137
                     ->  Bitmap Heap Scan on lineitem  (cost=47794.66..1151312.12 rows=2256764 width=12) (actual time=2382.763..11701.649 rows=2242320 loops=1)
                           Recheck Cond: ((l_shipdate >= '1995-12-01'::date) AND (l_shipdate < '1996-02-29 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=188151 read=471758 dirtied=378 written=91
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47230.47 rows=2256764 width=0) (actual time=1813.918..1813.918 rows=2249074 loops=1)
                                 Index Cond: ((l_shipdate >= '1995-12-01'::date) AND (l_shipdate < '1996-02-29 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6126 written=9
 Total runtime: 27841.057 ms
(33 rows)

drop view revenue4;
DROP VIEW
COMMIT;
COMMIT