Re: [PATCH] Add two-arg for of current_setting(NAME, FALLBACK)

On Thu, Mar 19, 2015 at 3:41 PM, David Christensen <david(at)endpoint(dot)com>
wrote:

> The two-arg form of the current_setting() function will allow a
> fallback value to be returned instead of throwing an error when an
> unknown GUC is provided. This would come in most useful when using
> custom GUCs; e.g.:
>
> -- returns current setting of foo.bar, or 'default' if not set
> SELECT current_setting('foo.bar', 'default')
>

​​This doesn't actually change the GUC in the system, right? Do we want a
side-effect version of this?

There is already a two-arg form where the second argument is a boolean -
there needs to be tests that ensure proper behavior and function lookup
resolution.

No docs.

David J.
​