pranav.lodha 256f37f17f IMPALA-11205: Implement Statistical functions: CORR(), COVAR_SAMP() ...

and COVAR_POP()

CORR() function takes two numeric type columns as arguments and returns
the Pearson's correlation coefficient between them.
COVAR_SAMP() function takes two numeric type columns and returns sample
 covariance between them.
COVAR_POP() function takes two numeric type columns and returns
 population covariance between them.
These UDAFs are tested with a few query tests written in aggregation.test.

Change-Id: I32ad627c953ba24d9cde2d5549bdd0d27a9c0d06
Reviewed-on: http://gerrit.cloudera.org:8080/18413
Reviewed-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>

2022-06-19 04:35:04 +00:00

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