UPDATE baslangic SET stritem = ( SELECT stritem FROM USERDATA WHERE struserid = '100' )
WHERE class = '1'
UPDATE baslangic SET stritem = ( SELECT stritem FROM USERDATA WHERE struserid = '200' )
WHERE class = '2'
UPDATE baslangic SET stritem = ( SELECT stritem FROM USERDATA WHERE struserid = '300' )
WHERE class = '4'