isNull :: RDataType -> Bool
isNull x = 
    case x of
        Null -> True
        _    -> False

-- | Use this function to compare an RDataType with the Null value because deu to Null logic
--  x == Null or x /= Null, will always return False.
-- It returns True if input value is Not Null
isNull :: RDataType -> Bool
isNull x = 
    case x of
        Null -> True
        _    -> False

-- | Use this function to compare an RDataType with the Null value because deu to Null logic
--  x == Null or x /= Null, will always return False.
-- It returns True if input value is Not Null
isNull x = 
    case x of
        Null -> True
        _    -> False

-- | Use this function to compare an RDataType with the Null value because deu to Null logic
--  x == Null or x /= Null, will always return False.
-- It returns True if input value is Not Null