[MADLIB-1128] Add GROUP BY to correlation functions

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: v1.15
• Component/s: Module: Descriptive Statistics
• Assignee: Nandish Jayaram
• Reporter: Frank McQuillan
• Created: 23/Jun/17 23:04
• Updated: 22/May/18 21:55
• Resolved: 22/May/18 21:55

Description

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.

Issue Links

• links to: GitHub Pull Request #269