BEGIN;
BEGIN
select
	cntrycode,
	count(*) as numcust,
	sum(c_acctbal) as totacctbal
from
	(
		select
			substr(c_phone, 1, 2) as cntrycode,
			c_acctbal
		from
			customer
		where
			substr(c_phone, 1, 2) in
				('27', '15', '18', '32', '17', '19', '29')
			and c_acctbal > (
				select
					avg(c_acctbal)
				from
					customer
				where
					c_acctbal > 0.00
					and substr(c_phone, 1, 2) in
						('27', '15', '18', '32', '17', '19', '29')
			)
			and not exists (
				select
					*
				from
					orders
				where
					o_custkey = c_custkey
			)
	) as vip
group by
	cntrycode
order by
	cntrycode;
 cntrycode | numcust | totacctbal  
-----------+---------+-------------
 15        |   91048 | 6.82325e+08
 17        |   91289 | 6.84905e+08
 18        |   91267 | 6.84464e+08
 19        |   90859 |  6.8168e+08
 27        |   90907 | 6.81697e+08
 29        |   91097 | 6.83548e+08
 32        |   90641 | 6.80324e+08
(7 rows)

COMMIT;
COMMIT