[GitHub] [griffin] chitralverma commented on pull request #628: JDBC Connector SQL mode

["chitralverma (via GitHub)" <gi...@apache.org>]

chitralverma commented on PR #628:
URL: https://github.com/apache/griffin/pull/628#issuecomment-1437449959

   @XiaoyuBD  thanks for the PR.
   I have some questions about the purpose of the changes. 
   
   If you dont want to query unwanted columns or even transform the data before applying checks, you can put 1 or more queries in the `pre.proc` section of any data source. This has a far bigger scope that just JDBC as it applies to all types of sources.
   
   This will also support projection and predicate push down to the source which will allow much less IO.


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