Ben Kietzman created ARROW-7179:
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Summary: [C++][Compute] Coalesce kernel
Key: ARROW-7179
URL: https://issues.apache.org/jira/browse/ARROW-7179
Project: Apache Arrow
Issue Type: Improvement
Components: C++
Affects Versions: 0.15.1
Reporter: Ben Kietzman
Assignee: Ben Kietzman
Fix For: 1.0.0
Add a kernel which replaces null values in an array with a scalar value or with
values taken from another array:
{code}
coalesce([1, 2, null, 3], 5) -> [1, 2, 5, 3]
coalesce([1, null, null, 3], [5, 6, null, 8]) -> [1, 6, null, 3]
{code}
The code in {{take_internal.h}} should be of some use with a bit of refactoring.
A filter Expression should be added at the same time.
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