BEGIN;
BEGIN
create or replace view revenue9 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1994-04-01'
		and l_shipdate < date'1994-04-01' + 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,
	revenue9
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue9
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2371807.76..2376905.46 rows=3749 width=79) (actual time=26712.450..26712.453 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue9.supplier_no)
   Buffers: shared hit=868515 read=457527 written=25707
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1177310.93..1177310.94 rows=1 width=8) (actual time=13764.706..13764.706 rows=1 loops=1)
           Buffers: shared hit=330978 read=331239 written=19367
           ->  HashAggregate  (cost=1177226.57..1177264.06 rows=3749 width=12) (actual time=13698.629..13752.089 rows=100000 loops=1)
                 Buffers: shared hit=330978 read=331239 written=19367
                 ->  Bitmap Heap Scan on lineitem  (cost=47826.07..1154608.77 rows=2261780 width=12) (actual time=1939.795..10092.169 rows=2243551 loops=1)
                       Recheck Cond: ((l_shipdate >= '1994-04-01'::date) AND (l_shipdate < '1994-06-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=330978 read=331239 written=19367
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47260.63 rows=2261780 width=0) (actual time=1603.289..1603.289 rows=2261460 loops=1)
                             Index Cond: ((l_shipdate >= '1994-04-01'::date) AND (l_shipdate < '1994-06-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=1271 read=4863 written=633
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.152..24.291 rows=58899 loops=1)
         Buffers: shared hit=1606 read=1
   ->  Sort  (cost=1194496.82..1194506.20 rows=3749 width=12) (actual time=26681.964..26681.964 rows=1 loops=1)
         Sort Key: revenue9.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=866909 read=457526 written=25707
         ->  Subquery Scan on revenue9  (cost=1194189.92..1194274.28 rows=3749 width=12) (actual time=26663.011..26681.923 rows=1 loops=1)
               Buffers: shared hit=866909 read=457526 written=25707
               ->  HashAggregate  (cost=1194189.92..1194236.79 rows=3749 width=12) (actual time=26663.008..26681.918 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=866909 read=457526 written=25707
                     ->  Bitmap Heap Scan on lineitem  (cost=47826.07..1154608.77 rows=2261780 width=12) (actual time=2616.726..9448.404 rows=2243551 loops=1)
                           Recheck Cond: ((l_shipdate >= '1994-04-01'::date) AND (l_shipdate < '1994-06-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=535931 read=126287 written=6340
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47260.63 rows=2261780 width=0) (actual time=2193.075..2193.075 rows=2259270 loops=1)
                                 Index Cond: ((l_shipdate >= '1994-04-01'::date) AND (l_shipdate < '1994-06-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=2 read=6133 written=2
 Total runtime: 26727.210 ms
(33 rows)

drop view revenue9;
DROP VIEW
COMMIT;
COMMIT