SELECT descusercn AS 'Kennung', Vorname, Nachname, ISNULL(STUFF(( SELECT ', ' + title FROM tblOrganisationUnits JOIN tblUsersOrganisationUnits ON tblUsersOrganisationUnits.organisationUnit_id = tblOrganisationUnits.id WHERE tblUsersOrganisationUnits.user_id = tableUsers.intUserCn ORDER BY title FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'), 1, 1, ''), '')AS 'Organisationseinheit' FROM tableUsers WHERE intUserCn IN( SELECT user_id FROM tblUsersOrganisationUnits JOIN @orgUnit_id AS orgUnit_id ON orgUnit_id.value = tblUsersOrganisationUnits.organisationUnit_id)