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https://issues.apache.org/jira/browse/ORC-92?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15429073#comment-15429073
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Owen O'Malley commented on ORC-92:
----------------------------------
Currently, if the user picks an intermediate node in the type tree, it will
enable the parents, but not the children of that node. So in the case of:
{code}
struct<
a:struct<
a0:struct<
a00:int,
a01:int>,
a1:struct<
a10:int,
a11:int>>>
{code}
if the user selects 'a0' they will get 'a' and the root. They won't get 'a00'
or 'a01'. I think that would surprise most users.
What do you think?
> 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
> 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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