Re: doing VALID UNTIL programmatically in SQL ?

Karsten Hilbert <Karsten(dot)Hilbert(at)gmx(dot)net> writes:
> I have tried but not found a way to tell the VALID UNTIL clause
> something like
> now() + '6 months'::interval

CREATE USER, like pretty much all utility statements in Postgres,
won't do any expression evaluation --- the parameters have to be
simple literal constants.

The only workaround I can think of is to do the CREATE USER inside
a helper plpgsql function that does the time calculation and then
uses EXECUTE to run the command with the appropriate values plugged
in. It seems unlikely that this is a cleaner solution than doing it
in the client code ...

regards, tom lane