jacktengg opened a new pull request, #64333:
URL: https://github.com/apache/doris/pull/64333
Issue Number: close #xxx
Problem Summary: When the sum of weights passed to avg_weighted is zero but
the weighted data sum is non-zero, the function computed data_sum / weight_sum
and returned +/-Infinity (e.g. avg_weighted(f1, f2) over rows (1, 1), (2, -1)
returned -Infinity). The expected mathematical result of a division by zero
weight is undefined, so it should return NaN.
This fixes AggregateFunctionAvgWeightedData::get() to return quiet_NaN()
when weight_sum is exactly zero, instead of producing Infinity.
### What problem does this PR solve?
Issue Number: close #xxx
Related PR: #xxx
Problem Summary:
### Release note
None
### Check List (For Author)
- Test <!-- At least one of them must be included. -->
- [ ] Regression test
- [ ] Unit Test
- [ ] Manual test (add detailed scripts or steps below)
- [ ] No need to test or manual test. Explain why:
- [ ] This is a refactor/code format and no logic has been changed.
- [ ] Previous test can cover this change.
- [ ] No code files have been changed.
- [ ] Other reason <!-- Add your reason? -->
- Behavior changed:
- [ ] No.
- [ ] Yes. <!-- Explain the behavior change -->
- Does this need documentation?
- [ ] No.
- [ ] Yes. <!-- Add document PR link here. eg:
https://github.com/apache/doris-website/pull/1214 -->
### Check List (For Reviewer who merge this PR)
- [ ] Confirm the release note
- [ ] Confirm test cases
- [ ] Confirm document
- [ ] Add branch pick label <!-- Add branch pick label that this PR should
merge into -->
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