Andreas Pflug <[EMAIL PROTECTED]> writes: > Maybe my proposal wasn't clear enough: > Just as an index references a pg_class entry by it's OID, not some value > identifying it's physical storage, all objects might continue > referencing columns by attnum.
That's exactly the same thing I am saying. Your mistake is to assume that this function can be combined with identification of a (changeable) logical column position. It can't. Changeability and immutability are just not compatible requirements. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 6: Have you searched our list archives? http://archives.postgresql.org