> > However, select with SQL feels sub-optimal. > > Yes, when you use ogr2ogr with explicit layer names, there are > optimizations. For example, when you only specify the layer 'points', the > OSM driver will not even try to index the nodes into the temporary > database because it is not needed. However, as you noticed, there is not > yet any optimization when a SQL request is specified. >
Optimization for SQL request added in r24690
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