[Zope] - How can I get the column names from an SQL Method with DTML?

[Plamen Nikolaev]

Hi everybody,

I've been fascinated with Zope for 3 days already (thanks Digital
Creations!) and here is my first serious problem: I would like to ease
the creation of input forms for inserting data in a database.  My plan
is to be able to generate a form based on the fields of an already
created SQL Method with a "select * from table" statement. 

My question is: how can I get the column names from the SQL method?  I
think I noticed that _searchable_result_columns() is used to get this
information when creating a Search Interface.  Is it possible to get
it from DTML without using an External Method?

Thanks,
Plamen