Guid

Globally (Universally) Unique Identifiers (type GUID or UUID) constants are represented in RDM SQL as a hyphenated string of hexadecimal digits as defined in the following syntax.

guid:
          {UUID | GUID} "hhhhhhhh-hhhh-hhhh-hhhh-hhhhhhhhhhhh"

update mytypes 
 	set myguid = guid "9757c229-2e94-42a6-9579-194bc004b277"
 	where myrid = 12;