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https://issues.apache.org/jira/browse/HIVE-15978?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15904138#comment-15904138
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Pengcheng Xiong commented on HIVE-15978:
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I think you need to create GenericUDAF for each of these? And also you need to
support "OVER"? see
https://docs.oracle.com/cd/B19306_01/server.102/b14200/functions132.htm
> Support regr_* functions
> ------------------------
>
> Key: HIVE-15978
> URL: https://issues.apache.org/jira/browse/HIVE-15978
> Project: Hive
> Issue Type: Sub-task
> Components: SQL
> Reporter: Carter Shanklin
> Assignee: Zoltan Haindrich
>
> Support the standard regr_* functions, regr_slope, regr_intercept, regr_r2,
> regr_sxx, regr_syy, regr_sxy, regr_avgx, regr_avgy, regr_count. SQL reference
> section 10.9
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