An Odd AddSelect Problem

naaja

I got an AddSelect problem

I need to know what the line
if ($TableAlias != '') $QualifiedField = $TableAlias.'.'.$this->Context->DatabaseColumns[$this->TableMap[$TableAlias]][$Field];
in Framework.Class.SQLBuilder does exactly.

My problem is I have 2 fields in a table that I can't show correctly. So if the array looks like this
$s->AddSelect(array('Address','Telephone', 'Website'), 't');
Everything is fine, but if it looks like this
$s->AddSelect(array('Address','Telephone', 'RType', 'Website'), 't');
The select fails and SQL looks like
...t.Telephone as Telephone, t. as RType, t.Website as Website...

So $this->Context->DatabaseColumns[$this->TableMap[$TableAlias]][$Field] is the culprit, but why?

(there are, as I said, 2 fields that do this)

Any thoughts or a quick explanation of that one line would be helpful,

Thanks!