Oracle Alias Case Sensitive

Hi,

When I alias a column name its not returned with the matching case and is placed in all lower case.

$a = $this->db->query('
    SELECT
        c.cust_name "Customer Name"
    FROM ord o
    JOIN cust c
        ON c.cust_ser_num = o.cust_ser_num
    WHERE o.ord_num = 123
');

If I query the DB using a client like Navicat the case is maintained.

Any help would be appreciated.

Thanks.