[PR] Fix correlated subquery in HAVING cannot reference outer query column [shardingsphere]

["jonasHanhan (via GitHub)" <gi...@apache.org>]

jonasHanhan opened a new pull request, #37872:
URL: https://github.com/apache/shardingsphere/pull/37872

   Fixes #37431.
   
   Changes proposed in this pull request:
     - Merge FROM `tableBinderContexts` into `outerTableBinderContexts` before binding HAVING clause expressions
     - This allows correlated subqueries in HAVING to resolve outer query table aliases (e.g., `ref_0.c13`)
     - Aligns HAVING binding behavior with WHERE binding path
     - Add unit test for `HavingSegmentBinder`
     - Add integration tests for correlated subqueries in HAVING clause (PostgreSQL, MySQL, openGauss)
   
   ---
   
   Before committing this PR, I'm sure that I have checked the following options:
   - [x] My code follows the [code of conduct](https://shardingsphere.apache.org/community/en/involved/conduct/code/) of this project.
   - [x] I have self-reviewed the commit code.
   - [x] I have (or in comment I request) added corresponding labels for the pull request.
   - [x] I have passed maven check locally : `./mvnw clean install -B -T1C -Dmaven.javadoc.skip -Dmaven.jacoco.skip -e`.
   - [ ] I have made corresponding changes to the documentation.
   - [x] I have added corresponding unit tests for my changes.
   - [ ] I have updated the Release Notes of the current development version.


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Re: [PR] Fix correlated subquery in HAVING cannot reference outer query column [shardingsphere]

["terrymanu (via GitHub)" <gi...@apache.org>]

terrymanu merged PR #37872:
URL: https://github.com/apache/shardingsphere/pull/37872


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