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https://issues.apache.org/jira/browse/IMPALA-11205?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pranav Yogi Lodha resolved IMPALA-11205.
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Fix Version/s: Impala 4.2.0
Resolution: Fixed
> Implement Statistical functions : CORR(), COVAR_SAMP() and COVAR_POP()
> ----------------------------------------------------------------------
>
> Key: IMPALA-11205
> URL: https://issues.apache.org/jira/browse/IMPALA-11205
> Project: IMPALA
> Issue Type: Sub-task
> Components: Backend
> Reporter: Pranav Yogi Lodha
> Assignee: Pranav Yogi Lodha
> Priority: Major
> Fix For: Impala 4.2.0
>
>
> Implement 3 statistical functions:
> * CORR()
> * COVAR_SAMP()
> * COVAR_POP()
> *CORR()* : A correlation coefficient function CORR() which calculates
> Pearson's correlation coefficient between two columns. It should return a
> DOUBLE value ranging from -1 to 1 describing the correlation between the two
> numeric columns.
> *COVAR_SAMP()* : It returns the sample covariance between two columns of
> numeric types.
> *COVAR_POP()* : It returns the population covariance between two columns of
> numeric types.
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