hello i use the hql editor in netbeans

when I use the hql query command select like: "select age from students" and then run hql query it shows me the result in table but the result columns is in bytes and there are no headlines of the colums in the table, i added a picture...




but when I type a query like "from students it shows all the columns in the right way.
I think when I choose to select a specific column it going worng and I don't understand why.
any suggestions?
Thanks.