BEGIN;
BEGIN
create or replace view revenue8 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1994-12-01'
		and l_shipdate < date'1994-12-01' + 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,
	revenue8
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue8
	)
order by
	s_suppkey;
                                                                                      QUERY PLAN                                                                                       
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2365582.66..2370680.71 rows=3790 width=79) (actual time=19876.042..19876.047 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue8.supplier_no)
   Buffers: shared hit=737285 read=584823 written=59
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1174118.86..1174118.87 rows=1 width=8) (actual time=9119.331..9119.331 rows=1 loops=1)
           Buffers: shared hit=375055 read=285492 written=59
           ->  HashAggregate  (cost=1174033.58..1174071.48 rows=3790 width=12) (actual time=9070.125..9109.126 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=375055 read=285492 written=59
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=48361.03..1151207.76 rows=2282582 width=12) (actual time=1473.146..7177.296 rows=2248267 loops=1)
                       Recheck Cond: ((l_shipdate >= '1994-12-01'::date) AND (l_shipdate < '1995-03-01 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=654406
                       Buffers: shared hit=375055 read=285492 written=59
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47790.39 rows=2282582 width=0) (actual time=1091.962..1091.962 rows=2252875 loops=1)
                             Index Cond: ((l_shipdate >= '1994-12-01'::date) AND (l_shipdate < '1995-03-01 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6141
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.031..13.612 rows=37000 loops=1)
         Buffers: shared hit=1014
   ->  Sort  (cost=1191463.50..1191472.97 rows=3790 width=12) (actual time=19858.753..19858.755 rows=1 loops=1)
         Sort Key: revenue8.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=736271 read=584823 written=59
         ->  Subquery Scan on revenue8  (cost=1191152.95..1191238.22 rows=3790 width=12) (actual time=19858.519..19858.708 rows=1 loops=1)
               Buffers: shared hit=736271 read=584823 written=59
               ->  HashAggregate  (cost=1191152.95..1191200.32 rows=3790 width=12) (actual time=19858.517..19858.705 rows=1 loops=1)
                     Group Key: lineitem.l_suppkey
                     Filter: (sum((lineitem.l_extendedprice * (1::double precision - lineitem.l_discount))) = $0)
                     Rows Removed by Filter: 99999
                     Buffers: shared hit=736271 read=584823 written=59
                     ->  Bitmap Heap Scan on lineitem  (cost=48361.03..1151207.76 rows=2282582 width=12) (actual time=1297.661..8198.771 rows=2248267 loops=1)
                           Recheck Cond: ((l_shipdate >= '1994-12-01'::date) AND (l_shipdate < '1995-03-01 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=654406
                           Buffers: shared hit=361216 read=299331
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47790.39 rows=2282582 width=0) (actual time=997.807..997.807 rows=2252875 loops=1)
                                 Index Cond: ((l_shipdate >= '1994-12-01'::date) AND (l_shipdate < '1995-03-01 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6141
 Planning time: 2.782 ms
 Execution time: 19892.498 ms
(38 rows)

drop view revenue8;
DROP VIEW
COMMIT;
COMMIT