[Qgis-user] ordering an attribute table

[Goyo]

2013/9/27 Michael Spencer <spencer.mike.r at gmail.com>:
> Date: Thu, 26 Sep 2013 18:18:10 +0200
> From: Bernhard Str?bl <bernhard.stroebl at jena.de>
>
> [...] Thanks Bernhard, this was my original choice. Unfortunately I find the
> select tool a total black box and can't get my head around it. Your
> suggestion works for entries with 'null' in, but I can't get a response when
> I want to select 'nan' values. I've tried as:
>
> <"field" is nan>
> <"field" is 'nan'>
> <"field" = 'nan'>
>
> Both with no joy. Is there a crib sheet somewhere with basic options on?

What about not ("field" > -99999999)? It seems to work with "SLsum" in
your sample.

Goyo