[Qgis-user] SQL Expressions

[Nathan Woodrow]

You don't need to use the attribute function to get the current feature
fields, just use the field name:

'output_'||  "name"

"id" ||  "name"

On Sat, 28 Feb 2015 at 01:59 Niccolò Marchi <sciurusurbanus at hotmail.it>
wrote:

>  Hi all,
> I'm having some problems with the new atlas SQL features and I feel like a
> dumb.
> before 2.6 I've been able to set the output name such as "feature id _
> feature name", but I can't understand (or make it work) with the new
> functions $atlasfeature and $atlasfeatureid.
> indeed, once started with the atlas production, a temporary image is
> created and then overwritten, leaving me with nothing.
>
> I tried with:
>
> $atlasfeatureid || '_' || attribute($atlasfeature, "name" )
>
> and then
>
> attribute( $atlasfeature, "id" ) || '_' || attribute( $atlasfeature,
> "name" )
> ("id" is a numeric field within the table)
>
> any suggestion?
>
>
> thank you in advance!
> all the best,
>
> Nic
>
>
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