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Posted to issues@arrow.apache.org by "Joris Van den Bossche (Jira)" <ji...@apache.org> on 2021/01/15 08:37:00 UTC

[jira] [Created] (ARROW-11259) [Python] Allow to create field reference to nested field

Joris Van den Bossche created ARROW-11259:
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             Summary: [Python] Allow to create field reference to nested field
                 Key: ARROW-11259
                 URL: https://issues.apache.org/jira/browse/ARROW-11259
             Project: Apache Arrow
          Issue Type: Improvement
          Components: Python
            Reporter: Joris Van den Bossche
             Fix For: 4.0.0


Currently in the Python layer we have {{ds.field(name)}} for referencing a field eg when creating a filter expression.

On the C++ side, the {{FieldRef}} has the ability to reference nested fields (eg a child of a struct), for example constructed with {{FieldRef::FromDotPath}}.

We should think about how to enable users to reference nested fields like this in the Python API.



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