BEGIN;
BEGIN
create or replace view revenue15 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1996-12-01'
		and l_shipdate < date'1996-12-01' + 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,
	revenue15
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue15
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2372999.33..2378096.43 rows=3727 width=79) (actual time=18989.889..18989.895 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue15.supplier_no)
   Buffers: shared hit=678084 read=648869 written=794
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1177939.88..1177939.89 rows=1 width=8) (actual time=8835.555..8835.555 rows=1 loops=1)
           Buffers: shared hit=355000 read=308325 written=332
           ->  HashAggregate  (cost=1177856.02..1177893.29 rows=3727 width=12) (actual time=8787.071..8824.959 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=355000 read=308325 written=332
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=47610.75..1155325.11 rows=2253091 width=12) (actual time=1271.039..6808.761 rows=2245866 loops=1)
                       Recheck Cond: ((l_shipdate >= '1996-12-01'::date) AND (l_shipdate < '1997-03-01 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=657189
                       Buffers: shared hit=355000 read=308325 written=332
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47047.48 rows=2253091 width=0) (actual time=959.400..959.400 rows=2261649 loops=1)
                             Index Cond: ((l_shipdate >= '1996-12-01'::date) AND (l_shipdate < '1997-03-01 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6136 written=11
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.037..4.421 rows=10906 loops=1)
         Buffers: shared hit=303
   ->  Sort  (cost=1195059.14..1195068.46 rows=3727 width=12) (actual time=18984.379..18984.382 rows=1 loops=1)
         Sort Key: revenue15.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=677781 read=648869 written=794
         ->  Subquery Scan on revenue15  (cost=1194754.21..1194838.06 rows=3727 width=12) (actual time=18968.675..18984.347 rows=1 loops=1)
               Buffers: shared hit=677781 read=648869 written=794
               ->  HashAggregate  (cost=1194754.21..1194800.79 rows=3727 width=12) (actual time=18968.674..18984.344 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=677781 read=648869 written=794
                     ->  Bitmap Heap Scan on lineitem  (cost=47610.75..1155325.11 rows=2253091 width=12) (actual time=1316.281..8072.461 rows=2245866 loops=1)
                           Recheck Cond: ((l_shipdate >= '1996-12-01'::date) AND (l_shipdate < '1997-03-01 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=657189
                           Buffers: shared hit=322781 read=340544 written=462
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47047.48 rows=2253091 width=0) (actual time=1021.191..1021.191 rows=2261649 loops=1)
                                 Index Cond: ((l_shipdate >= '1996-12-01'::date) AND (l_shipdate < '1997-03-01 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6136 written=1
 Planning time: 2.723 ms
 Execution time: 19008.831 ms
(38 rows)

drop view revenue15;
DROP VIEW
COMMIT;
COMMIT