maropu commented on pull request #28953:
URL: https://github.com/apache/spark/pull/28953#issuecomment-651616703


   > For ETL workload, there is a common requirement to perform SQL statement 
before/after reading/writing over JDBC.
   Here's examples;
   Create a view with specific conditions
   Delete/Update some records
   Truncate a table (it is already possible in truncate option)
   Execute stored procedure (it is also requested in SPARK-32014)
   
   @gatorsmile WDYT the usecases described above? I'm not sure it's reasonable 
or not because I've never met users making such a request.


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