BEGIN;
BEGIN
create or replace view revenue8 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1993-07-01'
		and l_shipdate < date'1993-07-01' + 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,
	revenue8
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue8
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2363184.44..2368281.97 rows=3755 width=79) (actual time=22683.119..22683.124 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue8.supplier_no)
   Buffers: shared hit=603581 read=717989
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1173010.64..1173010.65 rows=1 width=8) (actual time=12458.500..12458.500 rows=1 loops=1)
           Buffers: shared hit=257758 read=402264
           ->  HashAggregate  (cost=1172926.15..1172963.70 rows=3755 width=12) (actual time=12374.715..12447.908 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=257758 read=402264
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=47851.78..1150339.60 rows=2258655 width=12) (actual time=2094.796..9185.976 rows=2249302 loops=1)
                       Recheck Cond: ((l_shipdate >= '1993-07-01'::date) AND (l_shipdate < '1993-09-29 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=653879
                       Buffers: shared hit=257758 read=402264
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47287.12 rows=2258655 width=0) (actual time=1631.708..1631.708 rows=2253609 loops=1)
                             Index Cond: ((l_shipdate >= '1993-07-01'::date) AND (l_shipdate < '1993-09-29 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6143
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.034..23.434 rows=55988 loops=1)
         Buffers: shared hit=1526
   ->  Sort  (cost=1190173.50..1190182.89 rows=3755 width=12) (actual time=22653.967..22653.970 rows=1 loops=1)
         Sort Key: revenue8.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=602055 read=717989
         ->  Subquery Scan on revenue8  (cost=1189866.07..1189950.55 rows=3755 width=12) (actual time=22632.404..22653.935 rows=1 loops=1)
               Buffers: shared hit=602055 read=717989
               ->  HashAggregate  (cost=1189866.07..1189913.00 rows=3755 width=12) (actual time=22632.403..22653.932 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=602055 read=717989
                     ->  Bitmap Heap Scan on lineitem  (cost=47851.78..1150339.60 rows=2258655 width=12) (actual time=1325.456..8283.093 rows=2249302 loops=1)
                           Recheck Cond: ((l_shipdate >= '1993-07-01'::date) AND (l_shipdate < '1993-09-29 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=653879
                           Buffers: shared hit=344297 read=315725
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47287.12 rows=2258655 width=0) (actual time=1013.601..1013.601 rows=2253609 loops=1)
                                 Index Cond: ((l_shipdate >= '1993-07-01'::date) AND (l_shipdate < '1993-09-29 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6143
 Planning time: 2.622 ms
 Execution time: 22702.723 ms
(38 rows)

drop view revenue8;
DROP VIEW
COMMIT;
COMMIT