[ARROW-17989] [C++] Enable struct_field kernel to accept string field names - ASF JIRA

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Details

Type: Improvement
Status: Resolved
Priority: Major
Resolution: Fixed
Affects Version/s: None
Fix Version/s: 11.0.0
Component/s: C++
Labels:
- compute
- pull-request-available

External issue URL:
https://github.com/apache/arrow/issues/33194

Description

Currently the "struct_field" kernel only works for integer indices for the child fields. From the StructFieldOption class (https://github.com/apache/arrow/blob/3d7f2f22a0fc441a41b8fa971e11c0f4290ebb24/cpp/src/arrow/compute/api_scalar.h#L283-L285):

  /// The child indices to extract. For instance, to get the 2nd child
  /// of the 1st child of a struct or union, this would be {0, 1}.
  std::vector<int> indices;

It would be nice if you could also refer to fields by name in addition to by position.

Attachments

Issue Links

is related to

ARROW-18295 [C++] FieldRef::FindAll/FindOne(DataType) improve error

Open

ARROW-17141 [C++] Enable selecting nested fields in StructArray with field path

Closed

links to

GitHub Pull Request #14495

Activity

People

Assignee:: Miles Granger

Reporter:: Joris Van den Bossche

Votes:: 0 Vote for this issue

Watchers:: 4 Start watching this issue

Dates

Created:: 11/Oct/22 13:36

Updated:: 11/Jan/23 11:57

Resolved:: 22/Nov/22 10:57

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