BEGIN;
BEGIN
create or replace view revenue0 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1996-10-01'
		and l_shipdate < date'1996-10-01' + 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,
	revenue0
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue0
	)
order by
	s_suppkey;
                                                                                      QUERY PLAN                                                                                       
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2356440.47..2361537.39 rows=3715 width=79) (actual time=16329.994..16329.998 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue0.supplier_no)
   Buffers: shared hit=324222 read=995082
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1169736.60..1169736.61 rows=1 width=8) (actual time=6174.592..6174.592 rows=1 loops=1)
           Buffers: shared hit=318690 read=340035
           ->  HashAggregate  (cost=1169653.01..1169690.16 rows=3715 width=12) (actual time=6143.966..6164.748 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=318690 read=340035
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=47355.71..1147324.09 rows=2232892 width=12) (actual time=841.287..4745.836 rows=2247361 loops=1)
                       Recheck Cond: ((l_shipdate >= '1996-10-01'::date) AND (l_shipdate < '1996-12-30 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=652586
                       Buffers: shared hit=318690 read=340035
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46797.49 rows=2232892 width=0) (actual time=623.468..623.468 rows=2247361 loops=1)
                             Index Cond: ((l_shipdate >= '1996-10-01'::date) AND (l_shipdate < '1996-12-30 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6139
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.053..27.375 rows=67992 loops=1)
         Buffers: shared hit=753 read=1101
   ->  Sort  (cost=1186703.57..1186712.86 rows=3715 width=12) (actual time=16296.493..16296.495 rows=1 loops=1)
         Sort Key: revenue0.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=323469 read=993981
         ->  Subquery Scan on revenue0  (cost=1186399.70..1186483.29 rows=3715 width=12) (actual time=16281.860..16296.447 rows=1 loops=1)
               Buffers: shared hit=323469 read=993981
               ->  HashAggregate  (cost=1186399.70..1186446.14 rows=3715 width=12) (actual time=16281.859..16296.446 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=323469 read=993981
                     ->  Bitmap Heap Scan on lineitem  (cost=47355.71..1147324.09 rows=2232892 width=12) (actual time=992.274..8350.260 rows=2247361 loops=1)
                           Recheck Cond: ((l_shipdate >= '1996-10-01'::date) AND (l_shipdate < '1996-12-30 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=652586
                           Buffers: shared hit=4779 read=653946
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46797.49 rows=2232892 width=0) (actual time=773.487..773.487 rows=2247361 loops=1)
                                 Index Cond: ((l_shipdate >= '1996-10-01'::date) AND (l_shipdate < '1996-12-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6139
 Planning time: 4.135 ms
 Execution time: 16335.600 ms
(38 rows)

drop view revenue0;
DROP VIEW
COMMIT;
COMMIT