I know you can do a mass import of Requesters but is there a way I can do a mass update of a particular field?

Basically for around 600 of my 2000+ requesters imported from AD, I need to be able to amend the Allowed to view field to show Department Requests.  Rather than go through each one manually I was hoping there would be a way to update them in one.

I've already got the below script to identify the records I want to update.

SELECT AaaUser.USER_ID,AaaUser.FIRST_NAME "FullName",AaaLogin.NAME "LoginName",AaaLogin.DOMAINNAME "Domain",AaaContactInfo.EMAILID "Email",DepartmentDefinition.DEPTNAME "Department",SDOrganization.NAME "Site",AaaContactInfo.LANDLINE "Phone",SDUser.JOBTITLE "JobTitle",AaaContactInfo.MOBILE "Mobile" FROM AaaUser LEFT JOIN UserDepartment ON AaaUser.USER_ID=UserDepartment.USERID LEFT JOIN AaaUserContactInfo ON AaaUser.USER_ID=AaaUserContactInfo.USER_ID LEFT JOIN AaaContactInfo ON AaaUserContactInfo.CONTACTINFO_ID=AaaContactInfo.CONTACTINFO_ID LEFT JOIN DepartmentDefinition ON UserDepartment.DEPTID=DepartmentDefinition.DEPTID LEFT JOIN SiteDefinition ON DepartmentDefinition.SITEID=SiteDefinition.SITEID LEFT JOIN SDOrganization ON SiteDefinition.SITEID=SDOrganization.ORG_ID INNER JOIN SDUser ON AaaUser.USER_ID=SDUser.USERID LEFT JOIN HelpDeskCrew ON SDUser.USERID=HelpDeskCrew.TECHNICIANID LEFT JOIN AaaLogin ON AaaUser.USER_ID=AaaLogin.USER_ID WHERE  ((HelpDeskCrew.TECHNICIANID IS NULL) AND (SDUser.STATUS = 'ACTIVE'))

MSSQL

9.1 Build  9118

Thanks