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https://issues.apache.org/jira/browse/ARROW-12318?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17332407#comment-17332407
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Andrew Lamb commented on ARROW-12318:
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Migrated to github: https://github.com/apache/arrow-datafusion/issues/200
> [Rust][DataFusion] Add support for AVG(Timestamp) types
> -------------------------------------------------------
>
> Key: ARROW-12318
> URL: https://issues.apache.org/jira/browse/ARROW-12318
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Rust - DataFusion
> Reporter: Andrew Lamb
> Priority: Minor
>
> This is a follow on to ARROW-12277
> Background: Support for Min/Max/Sum/Count were added for
> DataType::Timestamp(*) types in https://github.com/apache/arrow/pull/9970.
> This ticket tracks adding support for Avg, which is slightly more involved as
> currently Avg assumes the output type is always F64, and in this case I think
> Avg(timestamp) should also be (timestamp). We should double check what
> postgres does in this case and follow its example
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