Hi David, I'm pretty sure the FDO filter grammar spec treats nulls as a separate category of values which do not apply to comparison operators.
It's why we have dedicated operators in FDO to test for nullability: property_name NULL NOT property_name NULL Instead of property_name = NULL property_name <> NULL So to go back to your original question, I would say you amend the filter to be this instead. COUNTRY NULL OR COUNTRY <> 'CANADA' - Jackie You wrote: Hi Jackie, We're encountering an issue where data is not showing up on the map when a filter, under Layer Settings, is used and the attribute is null. For example, if the filter is COUNTRY <> 'CANADA' any record that does not contain a country will not show up on the map. We're using composite styles for this specific layer and our database is Oracle. Thanks, David
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