[ARROW-1561] [C++] Kernel implementations for "isin" (set containment)

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.15.0
• Component/s: C++
• Labels: Analytics pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/17576
• Assignee: Preeti Suman
• Reporter: Wes McKinney
• Created: 19/Sep/17 21:54
• Updated: 11/Jan/23 07:15
• Resolved: 31/Jul/19 20:39

Description

isin determines whether each element in the left array is contained in the values in the right array. This function must handle the case where the right array has nulls (so that null in the left array will return true)

isin(['a', 'b', null], ['a', 'c'])
returns [true, false, null]

isin(['a', 'b', null], ['a', 'c', null])
returns [true, false, true]

May need an option to return false for null instead of null

Issue Links

• links to: GitHub Pull Request #4235