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https://issues.apache.org/jira/browse/CALCITE-1776?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16579746#comment-16579746
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Sergey Nuyanzin commented on CALCITE-1776:
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The PRs provides the second part of REGR_* functions implementation (the first
was done under
[CALCITE_2402|https://issues.apache.org/jira/browse/CALCITE-2402]).
Here there are the rest functions
* CORR
* REGR_AVGX
* REGR_AVGY
* REGR_INTERCEPT
* REGR_R2
* REGR_SLOPE
* REGR_SXY
> Implement CORR and REGR_* aggregate functions
> ---------------------------------------------
>
> Key: CALCITE-1776
> URL: https://issues.apache.org/jira/browse/CALCITE-1776
> Project: Calcite
> Issue Type: New Feature
> Reporter: Dmitri Shtilman
> Assignee: Julian Hyde
> Priority: Minor
>
> Implement correlation coefficient aggregate: CORR
> As well as the missing regression aggregates:
> REGR_SLOPE, REGR_INTERCEPT, REGR_COUNT, REGR_R2, REGR_AVGX, REGR_AVGY,
> REGR_SXY
> For reference, REGR_SXX and REGR_SYY have been added in [CALCITE-422]
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