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 >= '1995-02-01'
		and l_shipdate < date'1995-02-01' + 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=2373560.43..2378658.21 rows=3772 width=79) (actual time=23208.516..23208.521 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue9.supplier_no)
   Buffers: shared hit=645472 read=683147 dirtied=288 written=11024
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1178120.08..1178120.09 rows=1 width=8) (actual time=11635.865..11635.865 rows=1 loops=1)
           Buffers: shared hit=340674 read=322494 dirtied=2 written=10903
           ->  HashAggregate  (cost=1178035.21..1178072.93 rows=3772 width=12) (actual time=11593.342..11625.507 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=340674 read=322494 dirtied=2 written=10903
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=48192.94..1155240.70 rows=2279451 width=12) (actual time=3509.056..9655.159 rows=2249916 loops=1)
                       Recheck Cond: ((l_shipdate >= '1995-02-01'::date) AND (l_shipdate < '1995-05-02 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=657022
                       Buffers: shared hit=340674 read=322494 dirtied=2 written=10903
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47623.08 rows=2279451 width=0) (actual time=3041.254..3041.254 rows=2263284 loops=1)
                             Index Cond: ((l_shipdate >= '1995-02-01'::date) AND (l_shipdate < '1995-05-02 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6146
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.033..31.151 rows=83967 loops=1)
         Buffers: shared hit=2283
   ->  Sort  (cost=1195440.04..1195449.47 rows=3772 width=12) (actual time=23168.971..23168.973 rows=1 loops=1)
         Sort Key: revenue9.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=643189 read=683147 dirtied=288 written=11024
         ->  Subquery Scan on revenue9  (cost=1195131.10..1195215.97 rows=3772 width=12) (actual time=23126.319..23168.932 rows=1 loops=1)
               Buffers: shared hit=643189 read=683147 dirtied=288 written=11024
               ->  HashAggregate  (cost=1195131.10..1195178.25 rows=3772 width=12) (actual time=23126.317..23168.927 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=643189 read=683147 dirtied=288 written=11024
                     ->  Bitmap Heap Scan on lineitem  (cost=48192.94..1155240.70 rows=2279451 width=12) (actual time=1248.844..8964.999 rows=2249916 loops=1)
                           Recheck Cond: ((l_shipdate >= '1995-02-01'::date) AND (l_shipdate < '1995-05-02 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=657022
                           Buffers: shared hit=302515 read=360653 dirtied=286 written=121
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47623.08 rows=2279451 width=0) (actual time=977.252..977.252 rows=2263284 loops=1)
                                 Index Cond: ((l_shipdate >= '1995-02-01'::date) AND (l_shipdate < '1995-05-02 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6146 written=10
 Planning time: 3.128 ms
 Execution time: 23224.324 ms
(38 rows)

drop view revenue9;
DROP VIEW
COMMIT;
COMMIT