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Posted to reviews@spark.apache.org by "cloud-fan (via GitHub)" <gi...@apache.org> on 2023/12/21 04:23:04 UTC

Re: [PR] [SPARK-43049][SQL] Use CLOB instead of VARCHAR(255) for StringType for Oracle JDBC [spark]

cloud-fan commented on PR #40683:
URL: https://github.com/apache/spark/pull/40683#issuecomment-1865456175

   How about we revert it first? This brings perf issues for all use cases but only benefits corner cases where the string value is larger than 255.
   
   We can have a config to control the varchar length for oracle dialect.


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