Hi Ben,

We don't have a way to directly attach a SQL expression as a new "virtual" column. We can discuss where this falls on your priority list for 10.3 or some other future release.

I added the column aliasing feature a while ago to enable joining in data from external tables, and it also works for custom queries like in your scenario. It was simpler to implement than adding columns directly, but isn't as appropriate in this case.

Thanks,
Josh