Hi, I saw this question https://gis.stackexchange.com/questions/447359/what-is-the-effect-of-using-update-when-merging-geojsons-with-ogr2ogr and started to think when the ogr2ogr option -update is needed even when the -append option is used. At least for some drivers -append alone seems to be enough but are there some drivers that explicitly require also -update?
-Jukka Rahkonen-
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