starocean999 opened a new pull request, #17807:
URL: https://github.com/apache/doris/pull/17807

   # Proposed changes
   
   1. close (https://github.com/apache/doris/issues/16458) for nereids
   2. varchar and string type should be treated as same type in bucket shuffle 
join scenario.
   
   ```
   create table shuffle_join_t1 ( a varchar(10) not null )
   create table shuffle_join_t2 ( a varchar(5) not null, b string not null, c 
char(3) not null )
   ```
   the bellow 2 sqls can use bucket shuffle join
   ```
   select * from shuffle_join_t1 t1 left join shuffle_join_t2 t2 on t1.a = t2.a;
   select * from shuffle_join_t1 t1 left join shuffle_join_t2 t2 on t1.a = t2.b;
   ```
   
   ## Problem summary
   
   Describe your changes.
   
   ## Checklist(Required)
   
   * [ ] Does it affect the original behavior
   * [ ] Has unit tests been added
   * [ ] Has document been added or modified
   * [ ] Does it need to update dependencies
   * [ ] Is this PR support rollback (If NO, please explain WHY)
   
   ## Further comments
   
   If this is a relatively large or complex change, kick off the discussion at 
[[email protected]](mailto:[email protected]) by explaining why you 
chose the solution you did and what alternatives you considered, etc...
   
   


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