BEGIN;
BEGIN
create or replace view revenue16 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1996-09-01'
		and l_shipdate < date'1996-09-01' + 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,
	revenue16
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue16
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2378812.71..2383910.29 rows=3741 width=79) (actual time=33045.153..33045.158 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue16.supplier_no)
   Buffers: shared hit=771357 read=559189 written=156
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1180784.74..1180784.75 rows=1 width=8) (actual time=17371.217..17371.217 rows=1 loops=1)
           Buffers: shared hit=411619 read=252726 written=156
           ->  HashAggregate  (cost=1180700.56..1180737.97 rows=3741 width=12) (actual time=17296.184..17359.984 rows=100000 loops=1)
                 Buffers: shared hit=411619 read=252726 written=156
                 ->  Bitmap Heap Scan on lineitem  (cost=47917.16..1158005.60 rows=2269496 width=12) (actual time=2707.304..13448.447 rows=2249057 loops=1)
                       Recheck Cond: ((l_shipdate >= '1996-09-01'::date) AND (l_shipdate < '1996-11-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=411619 read=252726 written=156
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47349.79 rows=2269496 width=0) (actual time=2248.324..2248.324 rows=2269346 loops=1)
                             Index Cond: ((l_shipdate >= '1996-09-01'::date) AND (l_shipdate < '1996-11-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=1 read=6142
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.129..41.131 rows=67992 loops=1)
         Buffers: shared hit=1854 read=1
   ->  Sort  (cost=1198027.97..1198037.32 rows=3741 width=12) (actual time=32994.864..32994.864 rows=1 loops=1)
         Sort Key: revenue16.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=769503 read=559188 written=156
         ->  Subquery Scan on revenue16  (cost=1197721.78..1197805.96 rows=3741 width=12) (actual time=32953.209..32994.829 rows=1 loops=1)
               Buffers: shared hit=769503 read=559188 written=156
               ->  HashAggregate  (cost=1197721.78..1197768.55 rows=3741 width=12) (actual time=32953.208..32994.826 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=769503 read=559188 written=156
                     ->  Bitmap Heap Scan on lineitem  (cost=47917.16..1158005.60 rows=2269496 width=12) (actual time=2405.334..12488.131 rows=2249057 loops=1)
                           Recheck Cond: ((l_shipdate >= '1996-09-01'::date) AND (l_shipdate < '1996-11-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=357884 read=306462
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47349.79 rows=2269496 width=0) (actual time=1996.061..1996.061 rows=2269346 loops=1)
                                 Index Cond: ((l_shipdate >= '1996-09-01'::date) AND (l_shipdate < '1996-11-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=2 read=6142
 Total runtime: 33069.485 ms
(33 rows)

drop view revenue16;
DROP VIEW
COMMIT;
COMMIT