davidlghellin commented on issue #18867:
URL: https://github.com/apache/datafusion/issues/18867#issuecomment-3563255995

   Thanks, and sorry — I didn’t know that DataFusion aims to follow Postgres 
semantics by default for aggregates.
   
   I will check how Postgres defines `median` for these cases. If the behavior 
I implemented does not match the Postgres semantics, I will close this issue 
and move the Sail-specific version to the `datafusion-spark` crate instead, 
since Spark’s median behaves differently.
   
   Thanks for the clarification!
   


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