This is a JIRA to discuss the behavior of operator kernels that require more than one decimal column input where the column types have a different scale parameter.

For example:

a: decimal(12, 2)
b: decimal(10, 3)

c = a + b

Arithmetic is the primary use case, but anything that needs to efficiently operate on decimal columns with different scales would require this functionality.

I imagine that @jacques-n and folks at Dremio have thought about and solved the problem in Java. If so, we should consider implementing this behavior in C++. Otherwise, I'll do a bit of reading and digging to see how existing systems efficiently handle this problem.

Reporter: Phillip Cloud / @cpcloud

Related issues:

• [C++][Compute] Add scalar arithmetic kernels for decimal inputs (is superceded by)

_{Note: This issue was originally created as ARROW-1761. Please see the migration documentation for further details.}