[GitHub] [doris] zhengshubin opened a new issue, #10704: [Feature] Use Function to set the default value when add new column

[GitBox <gi...@apache.org>]

zhengshubin opened a new issue, #10704:
URL: https://github.com/apache/doris/issues/10704

   ### 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
   
   Now,If I want to add a date Type column  use  default value with old datetime type  coloum, I must rebuild this table .  But If  can Use Function to set the default value when add new column, it  can improve work efficiency。
   
   ### Use case
   
   The sql express just like this :
   ALTER TABLE  t1 ADD COLUMN  dt DATE DEFAULT   toDate(oldColumn) 
   
   
   
   
   ### Related issues
   
   _No response_
   
   ### Are you willing to submit PR?
   
   - [ ] 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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