select t.time1,t.time2 from Students t where t.T_date>=”20150301″ and t.T_date<=”20150331″ and (to_date(t.time1,”YYYYMMDDHH24mi”)-to_date(t.time2,”YYYYMMDDHH24mi”))*24*60>30
提示错误 ORA-01858: 在要求输入数字处找到非数字字符
求指导
提示错误 ORA-01858: 在要求输入数字处找到非数字字符
求指导
解决方案
40
time1、time2能否有不能转换成yyyymmddhh24mi的非法值?