I want to define user-defined types, i.e. types not SQLite has not built-in and make sure that I didn't overlook something. Is it correct that values of user-defined types should be stored as text and have a collation defined if there is an order relation for the type if the type cannot be represented as a subset of integer or float?
Example: Suppose I want to store arbitrary precision integers in SQLite. I would create a column with text affinity, (uniquely) serialize and deserialize the integers to text (e.g. by converting them into decimal representation) and define and declare a collation that deserializes the texts to arbitrary integers and compares the integers. Is there another way to define user-defined types despite this method and virtual tables? - Matthias-Christian
