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Posted to commits@doris.apache.org by "XnY-wei (via GitHub)" <gi...@apache.org> on 2026/05/18 03:04:19 UTC

[PR] fix: Compatibility ClickHouse cluster with Nullable(Nothing) type [doris]

XnY-wei opened a new pull request, #63336:
URL: https://github.com/apache/doris/pull/63336

   ### What problem does this PR solve?
   
   Issue Number: close #xxx
   
   Related PR: #xxx
   
   Problem Summary:
   
   CK
   `CREATE TABLE t_example ON CLUSTER LFRH_CK_TS_981
   (
       `id` UInt32,
       `v` Nullable(String)
   )
   ENGINE = MergeTree
   ORDER BY id`
   
   DORIS
   `
   SELECT * FROM QUERY(   'catalog' = 'ck981db5',   'query'   = 'SELECT * from db5.t_example
   ' );`
   
   ### 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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Re: [PR] fix: Compatibility ClickHouse cluster with Nullable(Nothing) type [doris]

Posted by "hello-stephen (via GitHub)" <gi...@apache.org>.
hello-stephen commented on PR #63336:
URL: https://github.com/apache/doris/pull/63336#issuecomment-4473877947

   
   Thank you for your contribution to Apache Doris.
   Don't know what should be done next? See [How to process your PR](https://cwiki.apache.org/confluence/display/DORIS/How+to+process+your+PR).
   
   Please clearly describe your PR:
   1. What problem was fixed (it's best to include specific error reporting information). How it was fixed.
   2. Which behaviors were modified. What was the previous behavior, what is it now, why was it modified, and what possible impacts might there be.
   3. What features were added. Why was this function added?
   4. Which code was refactored and why was this part of the code refactored?
   5. Which functions were optimized and what is the difference before and after the optimization?
       


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Re: [PR] fix: Compatibility ClickHouse cluster with Nullable(Nothing) type [doris]

Posted by "morrySnow (via GitHub)" <gi...@apache.org>.
morrySnow commented on PR #63336:
URL: https://github.com/apache/doris/pull/63336#issuecomment-4591398113

   add more detail to explain what happened inside in description


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