Re: Foreign key joins revisited

On 2021-Dec-27, Joel Jacobson wrote:

> >On Mon, Dec 27, 2021, at 15:48, Isaac Morland wrote:
> >I thought the proposal was to give the FK constraint name.
> >However, if the idea now is to allow leaving that out also if there 
> >is only one FK, then that's also OK as long as people understand it can break in the same way NATURAL JOIN can break

> >when columns are added later. For that matter, a join mentioning column names can break if the columns are changed.
But
 
> >breakage where the query no longer compiles are better than ones where it suddenly means something very different so

> >overall I wouldn't worry about this too much.
> 
> Yes, my proposal was indeed to give the FK constraint name.
> I just commented on Corey's different proposal that instead specified FK columns.

By way of precedent we have the ON CONFLICT clause, for which you can
specify a constraint name or a list of columns.

-- 
Álvaro Herrera           39°49'30"S 73°17'W  —  https://www.EnterpriseDB.com/
"Los trabajadores menos efectivos son sistematicamente llevados al lugar
donde pueden hacer el menor daño posible: gerencia."  (El principio Dilbert)