[Developers] MQL equivalent of SQL's SELECT DISTINCT?

[Jonathan W. Lowe]

I'm trying to form an MQL read query that specifies a type
(e.g. /business/company), finds all topics of that type, lists all other
types linked to those topics and returns a distinct list of those other
types (as per a SQL SELECT DISTINCT... query).

Is there an MQL "shortcut" equivalent to SQL's SELECT DISTINCT?

Thanks,
Jonathan