[ARROW-11880] [R] Handle empty or NULL transmute() args properly

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.0.0
• Component/s: R
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/27722
• Assignee: Ian Cook
• Reporter: Ian Cook
• Created: 05/Mar/21 19:41
• Updated: 11/Jan/23 08:22
• Resolved: 11/Mar/21 23:52

Description

The following examples should all return results with zero columns. Check that this behavior is consistent across Tables, RecordBatches, and Datasets. There are some cases currently where these examples return all columns or throw errors.

• transmute()
• transmute(NULL)
• transmute(x = NULL, y = NULL, z = NULL)
• x = NULL
  transmute(x = !!x)

Issue Links

• links to: GitHub Pull Request #9681