[ARROW-10019] [Rust] Add substring kernel

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.0.0
• Component/s: Rust
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/26043
• Assignee: Jorge Leitão
• Reporter: Jorge Leitão
• Created: 15/Sep/20 20:59
• Updated: 11/Jan/23 08:10
• Resolved: 27/Sep/20 21:29

Description

substring returns a substring of a StringArray starting at a given index, and with a given optional length.

fn substring(array: &Array, start: i32, length: &Option<u32>) -> Result<ArrayRef>

This operation is common in strings, and it is useful for string-based transformations

Issue Links

• links to: GitHub Pull Request #8199