While there is currently no 'easy' built-in functionality for this, you could achieve the same with a custom operator. I see there's one already available in our catalog.

The same can be achieved by copying over the column to a new one with the concatenation column manipulation, but then you lose information about the type, as a concatenation will always result in a textual column. So I would advice using the custom operator instead.

Note: both are just workarounds for functionality that will be delivered out of the box, at one point.