englefly opened a new pull request, #46773:
URL: https://github.com/apache/doris/pull/46773
### What problem does this PR solve?
the following rules only applies on pattern:
topn->outerJoin
if they are used a rbo rules, we miss the opportunity to optimize the plan,
when the initial plan pattern is topn->innerJoin.
to utilize the join reorder, the are moved to cbo rules, and when bottom
outer join reorders as the root of join cluster, these rules could be applied.
PushDownTopNThroughJoin
PushDownLimitDistinctThroughJoin
PushDownTopNDistinctThroughJoin
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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