It uses it's own query language, after that the biggest differences with a local PostGIS would be that it is a shared resource with some limits on query size and the lack of spatial operations (there are a couple simple spatial operations in the Overpass API query language, around an object and inside some boundaries).
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It uses it's own query language, after that the biggest differences with a local PostGIS would be that it is a shared resource with some limits on query size and the lack of spatial operations (there are a couple simple spatial operations in the Overpass API query language, around an object and inside some boundaries).