BEGIN;
BEGIN
create or replace view revenue1 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1993-02-01'
		and l_shipdate < date'1993-02-01' + 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,
	revenue1
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue1
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2376053.48..2381151.09 rows=3743 width=79) (actual time=27752.072..27752.075 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue1.supplier_no)
   Buffers: shared hit=472911 read=856671 dirtied=356 written=1645
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1179430.22..1179430.23 rows=1 width=8) (actual time=12161.474..12161.474 rows=1 loops=1)
           Buffers: shared hit=221068 read=442986 written=19
           ->  HashAggregate  (cost=1179346.00..1179383.43 rows=3743 width=12) (actual time=12087.643..12150.735 rows=100000 loops=1)
                 Buffers: shared hit=221068 read=442986 written=19
                 ->  Bitmap Heap Scan on lineitem  (cost=47800.38..1156718.15 rows=2262785 width=12) (actual time=1809.007..8871.523 rows=2250390 loops=1)
                       Recheck Cond: ((l_shipdate >= '1993-02-01'::date) AND (l_shipdate < '1993-05-02 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=221068 read=442986 written=19
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47234.68 rows=2262785 width=0) (actual time=1405.429..1405.429 rows=2268168 loops=1)
                             Index Cond: ((l_shipdate >= '1993-02-01'::date) AND (l_shipdate < '1993-05-02 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6146
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.112..22.858 rows=53897 loops=1)
         Buffers: shared hit=1472 read=1
   ->  Sort  (cost=1196623.25..1196632.61 rows=3743 width=12) (actual time=27723.534..27723.534 rows=1 loops=1)
         Sort Key: revenue1.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=471439 read=856670 dirtied=356 written=1645
         ->  Subquery Scan on revenue1  (cost=1196316.89..1196401.11 rows=3743 width=12) (actual time=27672.571..27723.501 rows=1 loops=1)
               Buffers: shared hit=471439 read=856670 dirtied=356 written=1645
               ->  HashAggregate  (cost=1196316.89..1196363.68 rows=3743 width=12) (actual time=27672.569..27723.497 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=471439 read=856670 dirtied=356 written=1645
                     ->  Bitmap Heap Scan on lineitem  (cost=47800.38..1156718.15 rows=2262785 width=12) (actual time=2449.906..11806.438 rows=2250390 loops=1)
                           Recheck Cond: ((l_shipdate >= '1993-02-01'::date) AND (l_shipdate < '1993-05-02 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=250371 read=413684 dirtied=356 written=1626
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47234.68 rows=2262785 width=0) (actual time=2033.219..2033.219 rows=2268168 loops=1)
                                 Index Cond: ((l_shipdate >= '1993-02-01'::date) AND (l_shipdate < '1993-05-02 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=4 read=6143 written=4
 Total runtime: 27771.531 ms
(33 rows)

drop view revenue1;
DROP VIEW
COMMIT;
COMMIT