SELECT count(DISTINCT T2.Location_Code) FROM Things AS T1 JOIN Timed_Locations_of_Things AS T2 ON T1.thing_id  =  T2.thing_id WHERE T1.service_details  =  'Unsatisfied'
How many distinct locations have the things with service detail 'Unsatisfied' been located in?
SELECT count ( DISTINCT T2.Location_Code ) FROM Things AS T1 JOIN Timed_Locations_of_Things AS T2 ON T1.thing_id = T2.thing_id WHERE T1.service_details = 'Unsatisfied '
select count ( distinct t2 . location_code ) from things as t1 join timed_locations_of_things as t2 on t1 . thing_id = t2 . thing_id where t1 . service_details = value
How many distinct locations have the things with service detail 'Unsatisfied ' been located in ?