Add covariance aggregate function covar_pop and covar_samp
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Key: HIVE-1529
URL: https://issues.apache.org/jira/browse/HIVE-1529
Project: Hadoop Hive
Issue Type: New Feature
Components: Query Processor
Affects Versions: 0.6.0
Reporter: Pierre Huyn
Fix For: 0.6.0
Create new built-in aggregate functions covar_pop and covar_samp, functions
commonly used in statistical data analyses.
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