[Zope] ZSQL: how to definde null

[Dieter Maurer]

Christoph Landwehr wrote at 2003-10-21 00:57 +0200:
 > I have a ZSQL method, that looks like
 > 
 > Attributes:
 >   some_name='empty'
 > 
 > UPDATE
 >     foo
 > SET
 >     bar = <dtml-sqlvar some_name  type="string">
 > WHERE
 >    some contitions ... ;

You can try the "optional" attribute for "dtml-sqlvar".
You might need to use "type=nb" (non blank) rather than "type=string".


Dieter