Makoto Yui created HIVEMALL-72:
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Summary: Fix rescale UDF behavior to return range [0.0,1.0]
Key: HIVEMALL-72
URL: https://issues.apache.org/jira/browse/HIVEMALL-72
Project: Hivemall
Issue Type: Bug
Reporter: Makoto Yui
Assignee: Makoto Yui
Priority: Minor
rescale(value, min, max) should return min value when value is less than min.
rescale(value, min, max) should return max value when value is greater than min.
o Current behavior
{code:sql}
select rescale(4.2,1.0,3.0),rescale(-0.3, 1.0, 3.0);
{code}
> 1.5999999 -0.65
o Expected behavior
{code:sql}
select rescale(4.2,1.0,3.0),rescale(-0.3, 1.0, 3.0);
{code}
> 1.0 3.0
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