select CONCAT(left(user_truename, 1),‘*‘,right(user_truename, 1)),
CONCAT(left(user_tel, 3),‘*****‘,right(user_tel, 3)),
CONCAT(left(user_platenumber, 2),‘*****‘,right(user_platenumber, 2)),CONCAT(region_name,‘_‘,region_name1)
from cb_user_5000
原文：http://www.cnblogs.com/shuixinwen/p/4065565.html