BEGIN;
BEGIN
create or replace view revenue23 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1994-01-01'
		and l_shipdate < date'1994-01-01' + 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,
	revenue23
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue23
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2363913.46..2369011.42 rows=3767 width=79) (actual time=88641.302..88641.306 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue23.supplier_no)
   Buffers: shared hit=930302 read=388331 written=217
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1173348.19..1173348.20 rows=1 width=8) (actual time=38454.587..38454.587 rows=1 loops=1)
           Buffers: shared hit=565489 read=93520
           ->  HashAggregate  (cost=1173263.43..1173301.10 rows=3767 width=12) (actual time=38383.998..38442.227 rows=100000 loops=1)
                 Buffers: shared hit=565489 read=93520
                 ->  Bitmap Heap Scan on lineitem  (cost=48011.03..1150605.67 rows=2265776 width=12) (actual time=4558.105..33569.734 rows=2244196 loops=1)
                       Recheck Cond: ((l_shipdate >= '1994-01-01'::date) AND (l_shipdate < '1994-04-01 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=565489 read=93520
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47444.59 rows=2265776 width=0) (actual time=4149.521..4149.521 rows=2248683 loops=1)
                             Index Cond: ((l_shipdate >= '1994-01-01'::date) AND (l_shipdate < '1994-04-01 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=4606 read=1524
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=1.127..34.082 rows=21986 loops=1)
         Buffers: shared hit=613 read=1
   ->  Sort  (cost=1190565.26..1190574.67 rows=3767 width=12) (actual time=88603.589..88603.590 rows=1 loops=1)
         Sort Key: revenue23.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=929689 read=388330 written=217
         ->  Subquery Scan on revenue23  (cost=1190256.75..1190341.51 rows=3767 width=12) (actual time=88584.543..88603.540 rows=1 loops=1)
               Buffers: shared hit=929689 read=388330 written=217
               ->  HashAggregate  (cost=1190256.75..1190303.84 rows=3767 width=12) (actual time=88584.540..88603.535 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=929689 read=388330 written=217
                     ->  Bitmap Heap Scan on lineitem  (cost=48011.03..1150605.67 rows=2265776 width=12) (actual time=2868.002..45015.627 rows=2244196 loops=1)
                           Recheck Cond: ((l_shipdate >= '1994-01-01'::date) AND (l_shipdate < '1994-04-01 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=364200 read=294810 written=217
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47444.59 rows=2265776 width=0) (actual time=2482.006..2482.006 rows=2248683 loops=1)
                                 Index Cond: ((l_shipdate >= '1994-01-01'::date) AND (l_shipdate < '1994-04-01 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=3 read=6128
 Total runtime: 88658.418 ms
(33 rows)

drop view revenue23;
DROP VIEW
COMMIT;
COMMIT