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 >= '1996-03-01'
		and l_shipdate < date'1996-03-01' + 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,
	revenue5
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue5
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2363459.13..2368556.95 rows=3757 width=79) (actual time=34888.104..34888.108 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue5.supplier_no)
   Buffers: shared hit=578266 read=741562
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1173138.15..1173138.16 rows=1 width=8) (actual time=15869.404..15869.404 rows=1 loops=1)
           Buffers: shared hit=326527 read=332811
           ->  HashAggregate  (cost=1173053.62..1173091.19 rows=3757 width=12) (actual time=15771.140..15852.862 rows=100000 loops=1)
                 Buffers: shared hit=326527 read=332811
                 ->  Bitmap Heap Scan on lineitem  (cost=47913.14..1150440.63 rows=2261299 width=12) (actual time=2218.788..12001.265 rows=2244694 loops=1)
                       Recheck Cond: ((l_shipdate >= '1996-03-01'::date) AND (l_shipdate < '1996-05-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=326527 read=332811
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47347.82 rows=2261299 width=0) (actual time=1439.501..1439.501 rows=2249030 loops=1)
                             Index Cond: ((l_shipdate >= '1996-03-01'::date) AND (l_shipdate < '1996-05-30 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6131
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.054..18.388 rows=41964 loops=1)
         Buffers: shared hit=1150 read=1
   ->  Sort  (cost=1190320.97..1190330.37 rows=3757 width=12) (actual time=34865.302..34865.302 rows=1 loops=1)
         Sort Key: revenue5.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=577116 read=741561
         ->  Subquery Scan on revenue5  (cost=1190013.36..1190097.89 rows=3757 width=12) (actual time=34837.597..34865.269 rows=1 loops=1)
               Buffers: shared hit=577116 read=741561
               ->  HashAggregate  (cost=1190013.36..1190060.32 rows=3757 width=12) (actual time=34837.595..34865.265 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=577116 read=741561
                     ->  Bitmap Heap Scan on lineitem  (cost=47913.14..1150440.63 rows=2261299 width=12) (actual time=2859.563..14853.874 rows=2244694 loops=1)
                           Recheck Cond: ((l_shipdate >= '1996-03-01'::date) AND (l_shipdate < '1996-05-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=250589 read=408750
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47347.82 rows=2261299 width=0) (actual time=2197.168..2197.168 rows=2249030 loops=1)
                                 Index Cond: ((l_shipdate >= '1996-03-01'::date) AND (l_shipdate < '1996-05-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6132
 Total runtime: 34904.650 ms
(33 rows)

drop view revenue5;
DROP VIEW
COMMIT;
COMMIT