Обсуждение: Creating tables with unknown type columns

Is it a good idea to allow creating tables with columns of type "unknown"?
This is generally a user error with an ambiguous CREATE TABLE AS and there
isn't a whole lot you can do with such a table.  Should it be an error?

-- 
Peter Eisentraut   peter_e@gmx.net   http://funkturm.homeip.net/~peter