Idea Summary
It would be amazingly useful to be able to defined the datatype for a facet column as being a "colon delimited" 

Use Case
I am storing the values of a multi-select LOV as a colon delimitated string in the database.  Each value in that string is then counted as a separate value and used to filter to any record that contains that value in the string.

Preferred Solution (Optional)
Add a new source type to the facet of “Colon Separated”.  When selected, it will convert the string to columns and count each value seperately.