I ran a query on an SDE Feature Class. It seems to return unique value variants that do not exist in the files table. When I query for SymbolType = 'Stairs', all of the features that show up have a SymbolType of 'STAIRS'. This also applies to 'Door', 'DOOR ', 'Seating', and 'Stairs'. How can I stop the "Get Unique Values" function from returning results that do not exist in the table?