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
				('25', '24', '15', '16', '33', '29', '17')
			and c_acctbal > (
				select
					avg(c_acctbal)
				from
					customer
				where
					c_acctbal > 0.00
					and substr(c_phone, 1, 2) in
						('25', '24', '15', '16', '33', '29', '17')
			)
			and not exists (
				select
					*
				from
					orders
				where
					o_custkey = c_custkey
			)
	) as vip
group by
	cntrycode
order by
	cntrycode;
 cntrycode | numcust | totacctbal  
-----------+---------+-------------
 15        |    9064 | 6.79772e+07
 16        |    8980 | 6.72987e+07
 17        |    9084 | 6.81695e+07
 24        |    8952 | 6.71146e+07
 25        |    9121 | 6.84108e+07
 29        |    9214 | 6.90903e+07
 33        |    9188 |  6.8925e+07
(7 rows)

COMMIT;
COMMIT