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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2020/12/17 02:56:43 UTC

[GitHub] [spark] AngersZhuuuu edited a comment on pull request #30805: [SPARK-33809][SQL] Support `all_columns_except` complex column expression

AngersZhuuuu edited a comment on pull request #30805:
URL: https://github.com/apache/spark/pull/30805#issuecomment-747162129


   > @AngersZhuuuu, do you have any reference of `all_columns_except` function in other DBMSes?
   
   https://stackoverflow.com/questions/729197/sql-exclude-a-column-using-select-except-columna-from-tablea
   https://dataschool.com/learn-sql/exclude-a-column/
   https://www.postgresonline.com/journal/archives/41-How-to-SELECT--ALL-EXCEPT-some-columns-in-a-table.html
   
   Didn't find any DBMS support such feature yet, but  I think many people need this feature. And it make our user convenient to write sql  easier and convert DF/DS api to SQL.


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