You would use Is Null and Is Not Null in query expressions and SQL WHERE clauses. IsNull(), on the other hand, is a Visual Basic for Applications (VBA) function and would be used only in VBA modules.

JSONNode.IsNull always returns 'false' - working fine in another version of SimpleJSON? #45. Copy link. Description. ROBYER1. ... I was using a check to see if the JSON was null, this worked with ...