BEGIN;
BEGIN
create or replace view revenue5 (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,
	revenue5
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue5
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2360474.44..2365571.43 rows=3702 width=79) (actual time=34851.001..34851.005 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue5.supplier_no)
   Buffers: shared hit=523120 read=799231
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1171759.68..1171759.69 rows=1 width=8) (actual time=15434.472..15434.472 rows=1 loops=1)
           Buffers: shared hit=274383 read=386298
           ->  HashAggregate  (cost=1171676.38..1171713.40 rows=3702 width=12) (actual time=15360.065..15423.471 rows=100000 loops=1)
                 Buffers: shared hit=274383 read=386298
                 ->  Bitmap Heap Scan on lineitem  (cost=47282.88..1149362.18 rows=2231420 width=12) (actual time=2157.814..11514.013 rows=2247022 loops=1)
                       Recheck Cond: ((l_shipdate >= '1997-07-01'::date) AND (l_shipdate < '1997-09-29 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=274383 read=386298
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46725.03 rows=2231420 width=0) (actual time=1670.080..1670.080 rows=2251572 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=0.00..4791.46 rows=100000 width=71) (actual time=0.068..15.644 rows=35977 loops=1)
         Buffers: shared hit=988
   ->  Sort  (cost=1188714.75..1188724.00 rows=3702 width=12) (actual time=34831.765..34831.766 rows=1 loops=1)
         Sort Key: revenue5.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=522132 read=799231
         ->  Subquery Scan on revenue5  (cost=1188412.03..1188495.33 rows=3702 width=12) (actual time=34788.719..34831.720 rows=1 loops=1)
               Buffers: shared hit=522132 read=799231
               ->  HashAggregate  (cost=1188412.03..1188458.31 rows=3702 width=12) (actual time=34788.718..34831.717 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=522132 read=799231
                     ->  Bitmap Heap Scan on lineitem  (cost=47282.88..1149362.18 rows=2231420 width=12) (actual time=2382.573..15220.476 rows=2247022 loops=1)
                           Recheck Cond: ((l_shipdate >= '1997-07-01'::date) AND (l_shipdate < '1997-09-29 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=247749 read=412933
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46725.03 rows=2231420 width=0) (actual time=2041.609..2041.609 rows=2251572 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=6138
 Total runtime: 34861.820 ms
(33 rows)

drop view revenue5;
DROP VIEW
COMMIT;
COMMIT