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https://issues.apache.org/jira/browse/MADLIB-1128?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Frank McQuillan updated MADLIB-1128:
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Summary: Add GROUP BY to correlation functions (was: Add GROUP BY to
correlation and covariance functions)
> Add GROUP BY to correlation functions
> -------------------------------------
>
> Key: MADLIB-1128
> URL: https://issues.apache.org/jira/browse/MADLIB-1128
> Project: Apache MADlib
> Issue Type: Improvement
> Components: Module: Descriptive Statistics
> Reporter: Frank McQuillan
> Priority: Minor
> Fix For: v2.0
>
>
> http://madlib.incubator.apache.org/docs/latest/group__grp__correlation.html
> add:
> grouping_cols (optional)
> TEXT, default: null. A comma-separated list of columns on which to group
> results. If NULL, correlations/covariance is produced on the complete table.
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