Wes McKinney created ARROW-1561:
-----------------------------------
Summary: [C++] Kernel implementations for "isin" (set containment)
Key: ARROW-1561
URL: https://issues.apache.org/jira/browse/ARROW-1561
Project: Apache Arrow
Issue Type: New Feature
Components: C++
Reporter: Wes McKinney
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)
{code}
isin(['a', 'b', null], ['a', 'c'])
returns [true, false, null]
isin(['a', 'b', null], ['a', 'c', null])
returns [true, false, true]
{code}
May need an option to return false for null instead of null
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
