BEGIN;
BEGIN
create or replace view revenue10 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1995-04-01'
		and l_shipdate < date'1995-04-01' + 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,
	revenue10
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue10
	)
order by
	s_suppkey;
                                                                                      QUERY PLAN                                                                                       
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2358219.27..2363316.07 rows=3706 width=79) (actual time=16442.184..16442.190 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue10.supplier_no)
   Buffers: shared hit=719868 read=600887 dirtied=242 written=37
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1170637.94..1170637.95 rows=1 width=8) (actual time=8233.816..8233.816 rows=1 loops=1)
           Buffers: shared hit=292949 read=366301 written=27
           ->  HashAggregate  (cost=1170554.56..1170591.62 rows=3706 width=12) (actual time=8192.887..8223.493 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=292949 read=366301 written=27
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=47263.88..1148256.69 rows=2229787 width=12) (actual time=1215.752..6409.698 rows=2248374 loops=1)
                       Recheck Cond: ((l_shipdate >= '1995-04-01'::date) AND (l_shipdate < '1995-06-30 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=653109
                       Buffers: shared hit=292949 read=366301 written=27
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46706.43 rows=2229787 width=0) (actual time=909.209..909.209 rows=2250533 loops=1)
                             Index Cond: ((l_shipdate >= '1995-04-01'::date) AND (l_shipdate < '1995-06-30 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=0.028..31.909 rows=82932 loops=1)
         Buffers: shared hit=2255
   ->  Sort  (cost=1187581.03..1187590.29 rows=3706 width=12) (actual time=16401.936..16401.938 rows=1 loops=1)
         Sort Key: revenue10.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=717613 read=600887 dirtied=242 written=37
         ->  Subquery Scan on revenue10  (cost=1187277.96..1187361.34 rows=3706 width=12) (actual time=16397.474..16401.907 rows=1 loops=1)
               Buffers: shared hit=717613 read=600887 dirtied=242 written=37
               ->  HashAggregate  (cost=1187277.96..1187324.28 rows=3706 width=12) (actual time=16397.473..16401.904 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=717613 read=600887 dirtied=242 written=37
                     ->  Bitmap Heap Scan on lineitem  (cost=47263.88..1148256.69 rows=2229787 width=12) (actual time=1202.485..6361.240 rows=2248374 loops=1)
                           Recheck Cond: ((l_shipdate >= '1995-04-01'::date) AND (l_shipdate < '1995-06-30 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=653109
                           Buffers: shared hit=424664 read=234586 dirtied=242 written=10
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46706.43 rows=2229787 width=0) (actual time=924.477..924.477 rows=2250533 loops=1)
                                 Index Cond: ((l_shipdate >= '1995-04-01'::date) AND (l_shipdate < '1995-06-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6141 written=4
 Planning time: 2.419 ms
 Execution time: 16450.798 ms
(38 rows)

drop view revenue10;
DROP VIEW
COMMIT;
COMMIT