[GitHub] [arrow-datafusion] jonmmease opened a new pull request, #6718: Add percentile_cont aggregation function

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

jonmmease opened a new pull request, #6718:
URL: https://github.com/apache/arrow-datafusion/pull/6718

   # Which issue does this PR close?
   
   Closes #6714
   
   # What changes are included in this PR?
   
   Adds the Postgres `PERCENTILE_CONT` aggregation function.  Refactors the median aggregation to use the new `PercentileContAccumulator` with percentile 0.5.
   
   In order to match the precision of the existing median tests I needed to use BigDecimal values for the linear interpolation step.
   
   # Are these changes tested?
   Yes, tests added to `datafusion/core/tests/sqllogictests/test_files/aggregate.slt`.
   
   # Are there any user-facing changes?
   Yes, the `percentile_cont` aggregation function is now available in SQL
   


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[GitHub] [arrow-datafusion] jonmmease closed pull request #6718: Add percentile_cont aggregation function

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

jonmmease closed pull request #6718: Add percentile_cont aggregation function
URL: https://github.com/apache/arrow-datafusion/pull/6718


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