yujun777 opened a new pull request, #58577:
URL: https://github.com/apache/doris/pull/58577

   ### What problem does this PR solve?
   
   For sql with sort and qualify, it may throw exception:
   
   ```
   MySQL [email protected]:db1> select b from t qualify sum(a) over() > 0 order by 
a;
   (1105, "errCode = 2, detailMessage = Unknown column 'a' in 'table list' in 
SORT clause(line 1, pos 72)")
   ```
   
   suppose sort's child is C,  then sort's input scope =  C's output slots 
union C's children's slots.
   
   for the above case,  C is qualify Q,  C's children is project P,  but  
qualify Q and project P's output slots are {b},  so cann't bind slot a.
   
   since qualify's output equals qualify's child's output, so we skip qualify, 
then we can solve this problem.
   
   ### 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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