Re: Undefined psql variables

> I'm inclined to suggest that we should require all extensions beyond the
> boolean-literal case to be set up as a keyword followed by appropriate
> argument(s); that seems like it's enough to prevent syntax conflicts from
> future additions.  So you could imagine
>
>     \if defined varname
>     \if sql boolean expression to send to server
>     \if compare value operator value

I'm still thinking:-)

Independently of the my aethetical complaint against having a pretty 
unusual keyword prefix syntax, how would you envision a \set assignment 
variant? Would \if have a different expression syntax somehow?

-- 
Fabien.