Dear PostgreSQL General, I wish to add the send and recv functions to a type I didn't write myself. The help for ALTER TABLE seems to indicate this is not supported directly. How can I achieve this? The extension in question is hashtypes on pgxn, https://pgxn.org/dist/hashtypes/ and I did not write it myself, but do want to add support for binary send and recv. I have a 48GB table already populated with sha1, and I'd rather not have to drop it in order to upgrade the extension. Also, if I do this, do I make the extension non-automatically-ugradeable? That is, is there a way to write an upgrade script from a version without send and recv, to a version with it? -- Johann I'm not from the internet, I just work there.