[GitHub] [sedona] Kontinuation commented on pull request #845: [SEDONA-286] Support optimized distance join on ST_DistanceSpheroid

["Kontinuation (via GitHub)" <gi...@apache.org>]

Kontinuation commented on PR #845:
URL: https://github.com/apache/sedona/pull/845#issuecomment-1566979479

   The transformation from sphere/spheroid distance to radius distance may not be an inclusive transformation, which means that $\forall (p_0, p_1, d) [ \textrm{DistanceSphere}(p_0, p_1) < d \implies \textrm{Distance}(p_0, p_1) < \frac{d}{111000} ]$ does not hold. Applying the optimization may result in fewer results being produced. If this is the case, we have to document that such queries may not produce accurate results, especially for geometries near the poles.


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