On Mon, May 23, 2011 at 1:53 PM, Tom Lane <t...@sss.pgh.pa.us> wrote: > Maybe. But casts would be the least of our concerns if we were trying > to change the column type. Changing typmod doesn't affect the set of > operations that could be applied to a column, whereas changing type > surely does.
OK, this is the crucial point I was missing. Sorry for being a bit fuzzy-headed about this. My mental model of our type system, or of what a type system ought to do, just doesn't match the type system we've got. So let's do it the way you proposed. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
