如：
select to_number('123') from table 正常
select to_number('a123') from table 报错。
如何能过滤掉a这个字符？
------解决方案--------------------
上面打错了
- SQL code
select to_number (Translate('a123','1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ','1234567890'))from dual
------解决方案--------------------
- SQL code
select to_number(REGEXP_REPLACE('a123ch','[a-zA-Z/:.]','')) from table;