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Posted to dev@orc.apache.org by GitBox <gi...@apache.org> on 2021/09/30 05:28:12 UTC

[GitHub] [orc] stiga-huang commented on pull request #921: ORC-1012: Support specifying columns in orc-scan

stiga-huang commented on pull request #921:
URL: https://github.com/apache/orc/pull/921#issuecomment-930796037


   Currently the other tools (orc-contents and orc-memory) that support specifying columns use fieldId instead of columnId. So only top-level field ids are supported. The new option in orc-scan has the same meaning as these tools. I'd suggest adding another option, e.g. --columnIds=1,2,3, for specifying columnIds. Maybe in a separate PR. Do you think it's ok?
   
   BTW, I slightly modify the test to include a top-level STRUCT column (fieldId=9 in examples/TestOrcFile.testSeek.orc).


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