null fields in filter

B

Ben

I have a form which I filter in filter by form mode. It is made up of several
different tables and works fine. I have a field in this form that filters on
the contents of a link table i.e some (not all) of my records in one table
can be linked to another. In my form I can filter by the name of the record
the main record is linked to, but is there a way to change this field to
null/not null? I would like to see how many records have links by using this
filteres form. any ideas? thank you.
 
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