[Zope-DB] Testing for empty result set

[Martin Jennings]

Hello,

thanks to the advice offered on this list some time ago, I have managed to
get my zope/plone set-up to connect to an Oracle DB and extract data.

Now all I have to do is test for an empty result set.

I suppose that I do this using the tal:condition attribute, but am not
sure what I am suppose to be testing.

Any help would be more than welcome.

Tank you in advance.

Martin Jennings