我想检查表中是否插入了有效的电话号码，所以我的触发代码在这里：

 select start_index
              into mob_index
              from gmarg_mobile_operators
              where START_INDEX = substr(:new.contact_info,0,3);

              if (REGEXP_LIKE (:NEW.CONTACT_INFO,'^(?:'|| mob_index ||')[\-,\:]{0,1}[0-9][0-9][\-,\:]{0,1}[0-9][0-9][\-,\:]{0,1}[0-9][0-9]')) then
                found := 1;
              end if;

我已经检查了我的正则表达式：“ ^（?: 555）[-,:] {0,1} [0-9] [0-9] [-,:] {0,1} [0-9] [ 0-9]
[-,:] {0,1} [0-9] [0-9]”，这是正确的。

当我运行触发器时，它会成功编译，但是在插入一行期间会显示以下错误：

 insert into GMARG_CONTACTS
(CLINET_ID,CONTACT_INFO,contact_type_id)
values
(0,'555194117','Mobile')
Error report -
SQL Error: ORA-12728: invalid range in regular expression
ORA-06512: at "HR.GMARG_TRIGGER_CONTACT", line 12
ORA-04088: error during execution of trigger 'HR.GMARG_TRIGGER_CONTACT'
12728. 00000 -  "invalid range in regular expression"
*Cause:    An invalid range was found in the regular expression.
*Action:   Ensure a valid range is being used.

因此，如果我的正则表达式正确，为什么oracle会显示错误？我试图找到答案，或者重新定义我的正则表达式，但是没有前进的步骤……在此先感谢您