v.25.10Improvement

MannWhitneyUTest no longer throws an exception

Official CH changelog text
mannWhitneyUTest no longer throws an exception when both samples contain only identical values. Now returns a valid result, consistent with SciPy. This closes: #79814. #80009 (DeanNeaht).
The mannWhitneyUTest function now returns a valid result instead of throwing an exception when both input samples contain only identical values.

Why it matters

This feature resolves an issue where mannWhitneyUTest would fail and throw an exception if both samples consisted solely of identical values, improving the function's robustness and aligning its behavior with SciPy's implementation.

How to use it

Users can continue to use mannWhitneyUTest as before in their SQL queries. The function now gracefully handles cases with identical values in both samples without any additional configuration.

Related resources

PreviousNext