SELECT SS.SEC_NAME, STUFF((SELECT '; ' + US.USR_NAME FROM USRS US WHERE US.SEC_ID = SS.SEC_ID ORDER BY USR_NAME FOR XML PATH('')), 1, 1, '') [SECTORS/USERS] FROM SALES_SECTORS SS GROUP BY SS.SEC_ID, SS.SEC_NAME ORDER BY 1
SELECT SS.SEC_NAME, STUFF((SELECT '; ' + US.USR_NAME FROM USRS US WHERE US.SEC_ID = SS.SEC_ID ORDER BY USR_NAME FOR XML PATH('')), 1, 1, '') [SECTORS/USERS] FROM SALES_SECTORS SS GROUP BY SS.SEC_ID, SS.SEC_NAME ORDER BY 1