[Qgis-user] Using expression dialog to access attributes from a relation.

[Andrew Bell]

I have spatial layer and non-spatial layer set up as a relation QGIS
3.4.  The non-spatial layer is the child. 

I'm trying create a display pop-up for the spatial layer that sources
attributes and values from the relation layer. 

I can see the relation is an option in the expression dialog but at the
moment I cannot see how I'm going to bring through field names and
values from this other table. 

Has anyone done this and have any pointers they could share? 

Many thanks 

Andrew
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