[postmodern-devel] query

[Haris]

I made query like this:

(sql (:select '* :from 'kupci :where (:and
(:raw (if 'ime (sql (:like 'ime (concat-string "%" (parameter "ime") "%"))) 
t))
(:raw (if 'prezime (sql (:like 'prezime (concat-string "%" (parameter 
"prezime") %"))) t)))))

but it doesn't work.
For example, if (:like ...) for 'ime field passes and 'prezime field is 
null,
record will not be selected.
Is the test (if 'prezime ...) ok to test that the field is not null ?
Or do I have to do something like (if (/= 'prezime nil) ...) ?