Robert Haas <robertmh...@gmail.com> writes: > Well, I think if that's the best we can do, you original proposal of > ditching the column constraint syntax altogether might be for the > best. I wasn't too excited about that before, but I think having two > different syntaxes is going to be even worse. In some ways, it's > actually sort of sensible, because the referring side isn't really the > column itself; it's some value extracted therefrom. You can imagine > other variants of that as well, such as the recently-suggested
> FOREIGN KEY ((somecol).member_name) REFERENCES othertab (doohicky) > Now, what would the column-constraint version of that look like? Is > it even sensible to think that there SHOULD be a column-constraint > version of that? I'm not convinced it is sensible, so maybe decreeing > that the table constraint version must be used to handle all > non-trivial cases is more sensible than I initially thought. I could easily go with that ... regards, tom lane -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers