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 >= '1997-07-01'
		and l_shipdate < date'1997-07-01' + 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,
	revenue9
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue9
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2371007.70..2376104.81 rows=3727 width=79) (actual time=20285.782..20285.787 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue9.supplier_no)
   Buffers: shared hit=545407 read=782056 written=297
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1176941.16..1176941.17 rows=1 width=8) (actual time=9252.104..9252.105 rows=1 loops=1)
           Buffers: shared hit=304063 read=359175 written=231
           ->  HashAggregate  (cost=1176857.31..1176894.58 rows=3727 width=12) (actual time=9207.659..9241.880 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=304063 read=359175 written=231
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=47654.68..1154318.66 rows=2253865 width=12) (actual time=1289.179..7391.050 rows=2246626 loops=1)
                       Recheck Cond: ((l_shipdate >= '1997-07-01'::date) AND (l_shipdate < '1997-09-29 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=657101
                       Buffers: shared hit=304063 read=359175 written=231
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47091.22 rows=2253865 width=0) (actual time=973.818..973.818 rows=2260343 loops=1)
                             Index Cond: ((l_shipdate >= '1997-07-01'::date) AND (l_shipdate < '1997-09-29 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6137
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.033..12.945 rows=35977 loops=1)
         Buffers: shared hit=987
   ->  Sort  (cost=1194066.23..1194075.55 rows=3727 width=12) (actual time=20269.191..20269.193 rows=1 loops=1)
         Sort Key: revenue9.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=544420 read=782056 written=297
         ->  Subquery Scan on revenue9  (cost=1193761.29..1193845.15 rows=3727 width=12) (actual time=20253.332..20269.161 rows=1 loops=1)
               Buffers: shared hit=544420 read=782056 written=297
               ->  HashAggregate  (cost=1193761.29..1193807.88 rows=3727 width=12) (actual time=20253.331..20269.159 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=544420 read=782056 written=297
                     ->  Bitmap Heap Scan on lineitem  (cost=47654.68..1154318.66 rows=2253865 width=12) (actual time=1342.039..9001.711 rows=2246626 loops=1)
                           Recheck Cond: ((l_shipdate >= '1997-07-01'::date) AND (l_shipdate < '1997-09-29 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=657101
                           Buffers: shared hit=240357 read=422881 written=66
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47091.22 rows=2253865 width=0) (actual time=1014.084..1014.084 rows=2260343 loops=1)
                                 Index Cond: ((l_shipdate >= '1997-07-01'::date) AND (l_shipdate < '1997-09-29 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6137
 Planning time: 2.752 ms
 Execution time: 20298.728 ms
(38 rows)

drop view revenue9;
DROP VIEW
COMMIT;
COMMIT