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  1. ORC
  2. ORC-97

Support column name selection in ReaderOptions

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    Details

    • Type: New Feature
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 1.2.0
    • Fix Version/s: 1.2.1, 1.3.0
    • Component/s: C++
    • Labels:
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      Description

      After orc-92 patch, column id selection is supported. But actually select sub-type by name is more useful.

      In my project, we use period(.) to separate nested field names.

      <s1:struct<s2:struct<int1: int>>>
      we choose int1 by s1.s2.int1 which will be passed include(std::list<std:string>).

      In my implementation: first I build a map for name and column id, and then direct the function call to includeTypes. If this is a candidate solution, I will provide a patch for review soon.

      When a sub-type is selected, all his child types should be selected also, as O'Malley pointed out in orc-92.

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            • Assignee:
              chunyang-wen Chunyang Wen
              Reporter:
              chunyang-wen Chunyang Wen
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                Updated:
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