HappenLee opened a new issue #4230:
URL: https://github.com/apache/incubator-doris/issues/4230


   **Is your feature request related to a problem? Please describe.**
   Now the sql TPCDS 95:
   ```
   with ws_wh as
   (select ws1.ws_order_number,ws1.ws_warehouse_sk wh1,ws2.ws_warehouse_sk wh2
    from web_sales ws1,web_sales ws2
    where ws1.ws_order_number = ws2.ws_order_number
      and ws1.ws_warehouse_sk <> ws2.ws_warehouse_sk)
   ```
   
   web_sales join itself, but the Doris chose shuffle join. This is an 
unreasonable choice, f left table and right table is same table, they are 
naturally colocate relationship no need to check colocate group.
   
   **Describe the solution you'd like**
   
   ColocateJoin should support table join itself no need to check colocate 
group.
   


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