On 2019-Dec-06, Pavel Stehule wrote:
> pá 6. 12. 2019 v 18:57 odesílatel Alvaro Herrera <alvherre@2ndquadrant.com>
> napsal:
> > (It seems a bit weird that if I assign NULL to :two pgbench stores the
> > empty string, instead of the NULL that I get as in the above which is
> > what happens when the variable is not defined at all. That's probably a
> > bug in \gset ...)
>
> psql session variables cannot to hold NULL
I also just learned that the :foo expansion in pgbench behaves crazily
when in normal query mode, particularly re. quotes in variables.
--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services