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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2020/10/23 08:56:03 UTC

[GitHub] [spark] cloud-fan commented on pull request #28953: [SPARK-32013][SQL] Support query execution before reading DataFrame and before/after writing DataFrame over JDBC

cloud-fan commented on pull request #28953:
URL: https://github.com/apache/spark/pull/28953#issuecomment-715202707


   This sounds like JDBC specific, as we can't use SQL to define actions for data sources like parquet.
   
   To clarify your use case, do you really need hooks, or just need the ability to run arbitrary SQL against the JDBC server with Spark?


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