BEGIN;
BEGIN
create or replace view revenue12 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1996-11-01'
		and l_shipdate < date'1996-11-01' + 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,
	revenue12
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue12
	)
order by
	s_suppkey;
                                                                                      QUERY PLAN                                                                                       
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2385457.97..2390554.79 rows=3708 width=79) (actual time=16852.064..16852.067 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue12.supplier_no)
   Buffers: shared hit=510685 read=825216 dirtied=692 written=440
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1184172.01..1184172.02 rows=1 width=8) (actual time=8426.543..8426.544 rows=1 loops=1)
           Buffers: shared hit=171604 read=495665 written=243
           ->  HashAggregate  (cost=1184088.58..1184125.66 rows=3708 width=12) (actual time=8392.728..8417.045 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=171604 read=495665 written=243
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=47456.80..1161563.47 rows=2252511 width=12) (actual time=895.795..6739.184 rows=2246253 loops=1)
                       Recheck Cond: ((l_shipdate >= '1996-11-01'::date) AND (l_shipdate < '1997-01-30 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=661131
                       Buffers: shared hit=171604 read=495665 written=243
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46893.68 rows=2252511 width=0) (actual time=668.568..668.568 rows=2275748 loops=1)
                             Index Cond: ((l_shipdate >= '1996-11-01'::date) AND (l_shipdate < '1997-01-30 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6138
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.069..19.634 rows=49906 loops=1)
         Buffers: shared hit=1340 read=23
   ->  Sort  (cost=1201285.66..1201294.93 rows=3708 width=12) (actual time=16827.742..16827.743 rows=1 loops=1)
         Sort Key: revenue12.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=509345 read=825193 dirtied=692 written=440
         ->  Subquery Scan on revenue12  (cost=1200982.41..1201065.84 rows=3708 width=12) (actual time=16819.804..16827.704 rows=1 loops=1)
               Buffers: shared hit=509345 read=825193 dirtied=692 written=440
               ->  HashAggregate  (cost=1200982.41..1201028.76 rows=3708 width=12) (actual time=16819.803..16827.701 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=509345 read=825193 dirtied=692 written=440
                     ->  Bitmap Heap Scan on lineitem  (cost=47456.80..1161563.47 rows=2252511 width=12) (actual time=1089.613..6662.447 rows=2246253 loops=1)
                           Recheck Cond: ((l_shipdate >= '1996-11-01'::date) AND (l_shipdate < '1997-01-30 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=661131
                           Buffers: shared hit=337741 read=329528 dirtied=692 written=197
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46893.68 rows=2252511 width=0) (actual time=821.559..821.559 rows=2275748 loops=1)
                                 Index Cond: ((l_shipdate >= '1996-11-01'::date) AND (l_shipdate < '1997-01-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6138
 Planning time: 2.554 ms
 Execution time: 16859.043 ms
(38 rows)

drop view revenue12;
DROP VIEW
COMMIT;
COMMIT