This works perfectly.
SELECT DOCSADM_PROFILE.SYSTEM_ID, DOCSADM_PROFILE.AUTHOR, DOCSADM_SECURITY.THING, DOCSADM_SECURITY.PERSONORGROUP, DOCSADM_SECURITY.ACCESSRIGHTS
FROM DOCSADM_PROFILE INNER JOIN DOCSADM_SECURITY ON DOCSADM_PROFILE.SYSTEM_ID = DOCSADM_SECURITY.THING
WHERE...