select wm_concat(message) from (
select rownum no, 'Case ''' || code || '''' || '' || chr(10)
|| 'as_mean = "' || Trim(mean) || '"' || chr(10)
|| 'as_class = "' || Trim(class) || '"' || chr(10)
|| 'as_reason = "' || Trim(reason) || '"' || chr(10)
|| 'as_tip = "' || Trim(tips) || '"' || chr(10) as message
from t_bankpos_error
) where no >= 61 and no <= 65