[jira] [Created] (ARROW-15357) [C++] Directly support nested field refs in exec plan

["David Li (Jira)" <ji...@apache.org>]

David Li created ARROW-15357:
--------------------------------

             Summary: [C++] Directly support nested field refs in exec plan
                 Key: ARROW-15357
                 URL: https://issues.apache.org/jira/browse/ARROW-15357
             Project: Apache Arrow
          Issue Type: Improvement
          Components: C++
            Reporter: David Li


ARROW-14658 added support for nested field refs, but aggregations, joins, etc. cannot directly use them (you must first project, then aggregate). The node implementations resolve a field ref into a field path, but then throw away all but the first index, and so they end up referencing the wrong field (the top-level field instead of the nested one). To implement this, we should take care we don't slow down the common case of no nested field refs.



--
This message was sent by Atlassian Jira
(v8.20.1#820001)