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 >= '1994-01-01'
		and l_shipdate < date'1994-01-01' + 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=2378311.70..2383409.26 rows=3740 width=79) (actual time=48356.400..48356.404 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue16.supplier_no)
   Buffers: shared hit=273974 read=1053863 written=188
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1180552.96..1180552.97 rows=1 width=8) (actual time=25544.985..25544.985 rows=1 loops=1)
           Buffers: shared hit=137834 read=525777 written=13
           ->  HashAggregate  (cost=1180468.81..1180506.21 rows=3740 width=12) (actual time=25466.256..25525.979 rows=100000 loops=1)
                 Buffers: shared hit=137834 read=525777 written=13
                 ->  Bitmap Heap Scan on lineitem  (cost=47810.06..1157823.71 rows=2264510 width=12) (actual time=1927.653..21529.949 rows=2244469 loops=1)
                       Recheck Cond: ((l_shipdate >= '1994-01-01'::date) AND (l_shipdate < '1994-04-01 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=137834 read=525777 written=13
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47243.93 rows=2264510 width=0) (actual time=1432.118..1432.118 rows=2264645 loops=1)
                             Index Cond: ((l_shipdate >= '1994-01-01'::date) AND (l_shipdate < '1994-04-01 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=2 read=6128
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.059..14.304 rows=21986 loops=1)
         Buffers: shared hit=614
   ->  Sort  (cost=1197758.73..1197768.08 rows=3740 width=12) (actual time=48338.189..48338.189 rows=1 loops=1)
         Sort Key: revenue16.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=273360 read=1053863 written=188
         ->  Subquery Scan on revenue16  (cost=1197452.63..1197536.78 rows=3740 width=12) (actual time=48319.699..48338.145 rows=1 loops=1)
               Buffers: shared hit=273360 read=1053863 written=188
               ->  HashAggregate  (cost=1197452.63..1197499.38 rows=3740 width=12) (actual time=48319.696..48338.137 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=273360 read=1053863 written=188
                     ->  Bitmap Heap Scan on lineitem  (cost=47810.06..1157823.71 rows=2264510 width=12) (actual time=2410.197..19116.129 rows=2244469 loops=1)
                           Recheck Cond: ((l_shipdate >= '1994-01-01'::date) AND (l_shipdate < '1994-04-01 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=135526 read=528086 written=175
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47243.93 rows=2264510 width=0) (actual time=2001.884..2001.884 rows=2264645 loops=1)
                                 Index Cond: ((l_shipdate >= '1994-01-01'::date) AND (l_shipdate < '1994-04-01 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6131 written=2
 Total runtime: 48374.279 ms
(33 rows)

drop view revenue16;
DROP VIEW
COMMIT;
COMMIT