I am trying to make a model in the processing modeler of QGIS.
I need a step where a layer with polygons is dissolved based on two fields.

At the moment I do this manually. When I open the dissolve algorithm i can select the two fields.

In the modelbuilder version I get a drop down menu or the option to enter the fields. If I try one field, all works well, If I try two fields, the algorithm dissolves my polygonlayer as if I didn't enter any field to dissolve on.

I am almost sure there is something wrong in the notation of how I give in the two field. It is not mentioned in the help document. I must have tried any combination I can think of, but not the correct one.

Does anybody have the answer?

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The correct syntax is


Source: https://lists.osgeo.org/pipermail/qgis-developer/2019-May/057263.html

  • Thank you, I feel like an idiot – CaptainAhab Feb 14 at 19:02
  • @CaptainAhab Don't! I couldn't figure it out myself either – underdark Feb 15 at 15:43

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