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
				('16', '13', '14', '21', '19', '32', '18')
			and c_acctbal > (
				select
					avg(c_acctbal)
				from
					customer
				where
					c_acctbal > 0.00
					and substr(c_phone, 1, 2) in
						('16', '13', '14', '21', '19', '32', '18')
			)
			and not exists (
				select
					*
				from
					orders
				where
					o_custkey = c_custkey
			)
	) as vip
group by
	cntrycode
order by
	cntrycode;
 cntrycode | numcust | totacctbal  
-----------+---------+-------------
 13        |   90769 | 6.79635e+08
 14        |   91472 | 6.85891e+08
 16        |   90639 | 6.79784e+08
 18        |   91313 | 6.84694e+08
 19        |   90902 | 6.81896e+08
 21        |   90919 |  6.8172e+08
 32        |   90690 | 6.80569e+08
(7 rows)

COMMIT;
COMMIT