[Qgis-user] union tool

[Stefan Giese (WhereGroup)]

You can use virtual layers (one possibility) with a union statement, 
something like:

SELECT geometry, field1, field2 FROM layer1
UNION SELECT geometry, field1, field2 FROM layer2
UNION SELECT geometry, field1, field2 FROM layer3
...

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Stefan Giese

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Am 2019-04-05 05:45, schrieb Boaz Bar Ilan:
> hi
> 
> is there a way to union many polygons which belongs to different
> layers all at once?
> 
> thanks
> 
> boaz
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