> There might be other cases of legal direct change of system catalog
> entries, e,g. varchar to text, if they all are only names for internally
> identical data structures. Can you tell which datatypes may be legally
> interchanged?
If pg_cast.castfunc is 0, you should might be able to do a datatype
change safely.
http://candle.pha.pa.us/main/writings/pgsql/sgml/catalog-pg-cast.html#AEN49071
--
Rod Taylor <rbt@rbt.ca>
PGP Key: http://www.rbt.ca/rbtpub.asc