BEGIN;
BEGIN
create or replace view revenue3 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1995-12-01'
		and l_shipdate < date'1995-12-01' + 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,
	revenue3
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue3
	)
order by
	s_suppkey;
                                                                                      QUERY PLAN                                                                                       
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2377102.10..2382199.59 rows=3753 width=79) (actual time=16332.811..16332.813 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue3.supplier_no)
   Buffers: shared hit=676824 read=649984 written=67
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1179914.25..1179914.26 rows=1 width=8) (actual time=8680.380..8680.380 rows=1 loops=1)
           Buffers: shared hit=260205 read=402949 written=31
           ->  HashAggregate  (cost=1179829.81..1179867.34 rows=3753 width=12) (actual time=8642.891..8670.533 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=260205 read=402949 written=31
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=48018.88..1157095.84 rows=2273397 width=12) (actual time=1061.327..6723.628 rows=2239957 loops=1)
                       Recheck Cond: ((l_shipdate >= '1995-12-01'::date) AND (l_shipdate < '1996-02-29 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=657029
                       Buffers: shared hit=260205 read=402949 written=31
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47450.54 rows=2273397 width=0) (actual time=792.047..792.047 rows=2260348 loops=1)
                             Index Cond: ((l_shipdate >= '1995-12-01'::date) AND (l_shipdate < '1996-02-29 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6125
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.049..7.379 rows=17822 loops=1)
         Buffers: shared hit=500
   ->  Sort  (cost=1197187.54..1197196.92 rows=3753 width=12) (actual time=16323.736..16323.737 rows=1 loops=1)
         Sort Key: revenue3.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=676324 read=649984 written=67
         ->  Subquery Scan on revenue3  (cost=1196880.29..1196964.73 rows=3753 width=12) (actual time=16315.537..16323.709 rows=1 loops=1)
               Buffers: shared hit=676324 read=649984 written=67
               ->  HashAggregate  (cost=1196880.29..1196927.20 rows=3753 width=12) (actual time=16315.536..16323.706 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=676324 read=649984 written=67
                     ->  Bitmap Heap Scan on lineitem  (cost=48018.88..1157095.84 rows=2273397 width=12) (actual time=1019.781..6118.342 rows=2239957 loops=1)
                           Recheck Cond: ((l_shipdate >= '1995-12-01'::date) AND (l_shipdate < '1996-02-29 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=657029
                           Buffers: shared hit=416119 read=247035 written=36
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47450.54 rows=2273397 width=0) (actual time=779.125..779.125 rows=2260348 loops=1)
                                 Index Cond: ((l_shipdate >= '1995-12-01'::date) AND (l_shipdate < '1996-02-29 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6125 written=5
 Planning time: 2.648 ms
 Execution time: 16342.844 ms
(38 rows)

drop view revenue3;
DROP VIEW
COMMIT;
COMMIT