Eduardo Ponce created ARROW-12697:
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Summary: [C++][Compute] Generalize null value promotion for scalar
arithmetic functions
Key: ARROW-12697
URL: https://issues.apache.org/jira/browse/ARROW-12697
Project: Apache Arrow
Issue Type: Improvement
Components: C++
Reporter: Eduardo Ponce
Fix For: 5.0.0
The *DispatchBest()* method of scalar *ArithmeticFunction* only promotes NULL
types for binary functions via *ReplaceNullWithOtherType()*. Generalize NULL
value replacement to support ternary and variadic compute functions.
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