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 >= '1994-05-01'
		and l_shipdate < date'1994-05-01' + 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=2358680.82..2363778.50 rows=3748 width=79) (actual time=13403.061..13403.069 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue0.supplier_no)
   Buffers: shared hit=734731 read=584983
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1170772.34..1170772.35 rows=1 width=8) (actual time=3829.393..3829.393 rows=1 loops=1)
           Buffers: shared hit=657825 read=1052
           ->  HashAggregate  (cost=1170688.01..1170725.49 rows=3748 width=12) (actual time=3797.069..3819.539 rows=100000 loops=1)
                 Buffers: shared hit=657825 read=1052
                 ->  Bitmap Heap Scan on lineitem  (cost=47834.16..1148136.47 rows=2255154 width=12) (actual time=850.204..2484.371 rows=2247412 loops=1)
                       Recheck Cond: ((l_shipdate >= '1994-05-01'::date) AND (l_shipdate < '1994-07-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=657825 read=1052
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47270.37 rows=2255154 width=0) (actual time=625.423..625.423 rows=2247412 loops=1)
                             Index Cond: ((l_shipdate >= '1994-05-01'::date) AND (l_shipdate < '1994-07-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=6138
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.036..25.903 rows=71902 loops=1)
         Buffers: shared hit=1536 read=423
   ->  Sort  (cost=1187908.47..1187917.84 rows=3748 width=12) (actual time=13370.375..13370.378 rows=1 loops=1)
         Sort Key: revenue0.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=733195 read=584560
         ->  Subquery Scan on revenue0  (cost=1187601.66..1187685.99 rows=3748 width=12) (actual time=13354.681..13370.305 rows=1 loops=1)
               Buffers: shared hit=733195 read=584560
               ->  HashAggregate  (cost=1187601.66..1187648.51 rows=3748 width=12) (actual time=13354.677..13370.299 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=733195 read=584560
                     ->  Bitmap Heap Scan on lineitem  (cost=47834.16..1148136.47 rows=2255154 width=12) (actual time=877.454..7425.699 rows=2247412 loops=1)
                           Recheck Cond: ((l_shipdate >= '1994-05-01'::date) AND (l_shipdate < '1994-07-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=75370 read=583508
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47270.37 rows=2255154 width=0) (actual time=659.910..659.910 rows=2247412 loops=1)
                                 Index Cond: ((l_shipdate >= '1994-05-01'::date) AND (l_shipdate < '1994-07-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6139
 Total runtime: 13411.778 ms
(33 rows)

drop view revenue0;
DROP VIEW
COMMIT;
COMMIT