[GIS] How to merge overlap polygon respectively in one shapefile in QGIS

dissolvemergeqgis

I want to merge the polygons of one shapefile if they overlap， but I don't know what to do.
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I try'dissolve' but get only one final polygon. This is not what I need. I want to merge them respectively.

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Best Answer

That is not possible. Two overlapping polygons have different attributes. If you merge these two polygons, the result will be a single polygon but you keep the attributes of which polygon: the first or the second?

If the overlapping polygons have the same attributes you can use the group tool by specifying a grouping field.

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