[jira] [Updated] (ORC-92) Support type id (column id) selection in ReaderOptions

["Chunyang Wen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ORC-92?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chunyang Wen updated ORC-92:
----------------------------
    Summary: Support type id (column id) selection in ReaderOptions  (was: Support column id and column name selection in ReaderOptions)

> Support type id (column id) 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
>            Assignee: Chunyang Wen
>            Priority: Minor
>             Fix For: 1.2.0
>
>
> 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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