[ARROW-5492] [R] Add "col_select" argument to read_* functions to read subset of columns

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.14.0
• Component/s: R
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/21940
• Assignee: Romain Francois
• Reporter: Wes McKinney
• Created: 03/Jun/19 15:35
• Updated: 11/Jan/23 07:40
• Resolved: 25/Jun/19 18:20

Description

read_feather, read_parquet, read_csv_arrow (and read_json, when it exists) should take a `col_select` argument, following the model of vroom (readr and base R file readers also support this feature, just much more awkwardly).

Currently, read_feather has a "columns" argument and none of the other readers expose it. Parquet can certainly support it; cf. pyarrow.parquet.read_table.

 

Issue Links

• links to: GitHub issue
• links to: GitHub Pull Request #4627