AlenkaF commented on code in PR #12863:
URL: https://github.com/apache/arrow/pull/12863#discussion_r849061122
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python/pyarrow/compute.py:
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@@ -597,16 +597,29 @@ def field(name_or_index):
Stores only the field's name. Type and other information is known only when
the expression is bound to a dataset having an explicit scheme.
+ Nested references are allowed by passing a tuple of names.
+ For example ``('foo', 'bar')`` references the field named "bar" inside
+ the field named "foo".
+
Parameters
----------
- name_or_index : string or int
- The name or index of the field the expression references to.
+ name_or_index : string, tuple or int
Review Comment:
I think that allowing `field("a", "b")` would make a lot of sense. Will try
to implement it here and if I run into difficulties I will add a follow-up JIRA.
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