Chunyang Wen created ORC-92:
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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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