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Posted to issues@sedona.apache.org by "paleolimbot (via GitHub)" <gi...@apache.org> on 2026/09/22 17:49:23 UTC

[I] Support ordering in ST_Collect_Agg [sedona-db]

paleolimbot opened a new issue, #1337:
URL: https://github.com/apache/sedona-db/issues/1337

   Currently ordering is not respected for ST_Collect_Agg (https://github.com/apache/sedona-db/issues/1334) and after #1335 we explicitly reject it since it is not actually supported.
   
   In order to actually support it, we need to implement `reverse_expr` (e.g., https://github.com/apache/datafusion/pull/17165 ). This is complex, so I'm going to attempt it as a standalone change. Most of the other aggregate UDFs we have are order insensitive, which #1335 advertises and does not flag as unsupported.


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