Jak zadat více hodnot mezi klauzulí po klauzuli where

Můžete to zkusit tímto způsobem..

WHERE
    Vendor_Registration.Category_ID = 5 
    AND Vendor_PrimaryInfo.City = 'City'
    AND (value_text in ('sample value') or 
         (CASE WHEN (ISNUMERIC(value_text) = 1)
                      THEN CAST(value_text AS INT)   
                      ELSE -1 
              END) BETWEEN 0 AND 100)