Remote Objects Criteria - null values

Question

Is it possible to retrieve objects with null in given field? How to create such a criterion object? Something like:

{where:
       {fieldname: 
                  {eq : null }
       }
}

doesn't return any values. There is nothing about what to do about this case in documentation : criterion object format

Answer 1

Use following code snippet:

{where:
   {fieldname: 
              {eq : ''}
   }
}

Note that you should not pass null instead you need to pass '' empty string.