Humble elementary problem:
Microsoft knowledgebase http://support.microsoft.com/kb/209645 instructs
to use following criterion in query:
Forms![QBF_Form]![WhatCustomer] Or Forms![QBF_Form]![WhatCustomer] Is Null
However using this garbles the query design form. Where do I miss the idea?
Microsoft knowledgebase http://support.microsoft.com/kb/209645 instructs
to use following criterion in query:
Forms![QBF_Form]![WhatCustomer] Or Forms![QBF_Form]![WhatCustomer] Is Null
However using this garbles the query design form. Where do I miss the idea?