caiconghui opened a new issue #8028:
URL: https://github.com/apache/incubator-doris/issues/8028


   ### Search before asking
   
   - [X] I had searched in the 
[issues](https://github.com/apache/incubator-doris/issues?q=is%3Aissue) and 
found no similar issues.
   
   
   ### Description
   
   In some scenarios, users cannot find a suitable hash key to avoid data skew, 
so we need to provide an additional data distribution method to avoid data skew
   
   ### Use case
   
   CREATE TABLE table1
   (
       siteid INT DEFAULT '10',
       citycode SMALLINT,
       username VARCHAR(32) DEFAULT '',
       pv BIGINT SUM DEFAULT '0'
   )
   AGGREGATE KEY(siteid, citycode, username)
   DISTRIBUTED BY rand() BUCKETS 10
   PROPERTIES("replication_num" = "1");
   
   ### Related issues
   
   _No response_
   
   ### Are you willing to submit PR?
   
   - [X] Yes I am willing to submit a PR!
   
   ### Code of Conduct
   
   - [X] I agree to follow this project's [Code of 
Conduct](https://www.apache.org/foundation/policies/conduct)
   


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