Foreign Table datatypes

Hello!

I'm trying to create some foreign tables to a PostgreSQL database. In some cases, columns with certain datatypes cannot be consumed by IRIS and the following error is thrown:

 [SQLCODE: <-237>:<Schema import for foreign table did not return column metadata>]

  [%msg: <Unkown data type returned by external database>]

For example: serial4 typed ID columns are typical examples. Is it possible, what's the best way of resolving these datatypes, which- seemingly- don't have proper JDBC metadata mappings?

Of course, explicitely defining columns and types as part of the CREATE FOREIGN TABLE statement solves the problem, but when working with large number of foreign tables and unknown number of potentially problematic datataypes, this can be cumbersome.

Thank you for any help in advance!

Attila Toth