JDBC Error - [INVALID_CHARACTER_ERR: An invalid or illegal XML character is spe

Hi,
I've found out the solution - call it a bug

The problem is in response when xml is build. If you use a query where the name of return column is not specified, then it is null (I just assume) and error is created. If you give a name to this column using "as" everything is created succesfully. I had this problem with aggregation functions like max, min, etc.

I hope it helped.