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From "Chunyang Wen (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ORC-92) Support column id and column name selection in ReaderOptions
Date Wed, 10 Aug 2016 03:02:20 GMT
Chunyang Wen created ORC-92:
-------------------------------

             Summary: Support column id and column name selection in ReaderOptions
                 Key: ORC-92
                 URL: https://issues.apache.org/jira/browse/ORC-92
             Project: Orc
          Issue Type: New Feature
          Components: C++
    Affects Versions: 1.2.0
            Reporter: Chunyang Wen
            Priority: Minor


Currently, in C++ version of orc. We can only select by filed id or field name. This works
fine when data structure is flat such as struct<int1:int, s1:string, list1:array<int>>.
But when we have a nested structure, struct<int1:int, struct1:struct<int2:int, long2:long>>.
We still can only select the field of int1 and struct1. We can not directly select long2.

We can select long2 by its column id. This can be achieved by updating include function in
ReaderOptions. 



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