ORACLE 单列查询变单行显示

SELECT substr(sys_connect_by_path(dutywork, ";"), 2)
  FROM (select dutywork,rownum rn
          from t_test)
 WHERE connect_by_isleaf = 1
 START WITH rn = 1
CONNECT BY prior rn = rn - 1;SELECT substr(sys_connect_by_path(dutywork, ";"),