feiniaofeiafei opened a new pull request, #65368:
URL: https://github.com/apache/doris/pull/65368
### What problem does this PR solve?
Issue Number: None
Related PR: None
Problem Summary: Multiple DISTINCT aggregate checks used raw distinct
function count and the union of distinct arguments, so equivalent multi-column
COUNT(DISTINCT ...) expressions with different argument order could be routed
to split strategy or rejected inconsistently. This change adds a shared
distinct argument group collector, uses it in strategy selection, and makes
CheckMultiDistinct fail only when multiple distinct argument groups remain
after rewrite.
### Release note
None
### Check List (For Author)
- Test:
- FE checkstyle: `mvn checkstyle:check -pl fe-core`
- FE compile: `mvn -pl fe-core -am -DskipTests compile`
- Behavior changed: Yes. Residual logical aggregates with multiple distinct
argument groups now fail with a clear analysis error after rewrite; equivalent
argument permutations are treated as one group for strategy selection/checking.
- Does this need documentation: No
### 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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