Manually renaming columns is something we have on our backlog. This is becoming a rather popular request so we'll make sure to give this the right priority.

Some notes:

• The table name suffix has already been removed from the columns from 10.2.10 onwards (see RN34302).
• The current column manipulations (concatenate and regular expression matching) will indeed make a new column of type string. This will have different side effects for filtering and sorting.