Oracle判断是否为数字或数字型字符串

需求： 如果字段值不是数字或者数字型字符串，把该字段值update成'' 1.函数法（不能批量，舍弃）： create or replace function isNumber(p_in varchar2) return boolean as i number; begin i:=to_number(p_in); return true; exception when others then return false; end ; 但是这个好像只能一个个判断，不能批量。 2. SQL> select nvl2(translate('333', '\1234567890 ', '\'), 'is characters ', 'is number ') from dual; NVL2(TRANSLATE('333','\1234567 ------------------------------ is number SQL> select nvl2(translate(333, '\1234567890 ', '\'), 'is characters', 'is number') from dual; NVL2(TRANSLATE(333,'\123456789 ------------------------------ is number SQL> select nvl2(translate('aaaaa', '\1234567890 ', '\'), 'is characters', 'is number') from dual; NVL2(TRANSLATE('AAAAA','\12345 ------------------------------ is characters SQL> 3.据说要批量，可以这样先查出来，没有试过： select decode(nvl2(translate(column, '\1234567890 ', '\'), '0', '1') ,'1',column,'') from dual; 我写的： Update T_87_Mtbuf Set SpCode='' Where nvl2(translate(SpCode, '\1234567890 ', '\'), 'is characters', 'is number ')='is characters'; SELECT PLL.LINE_LOCATION_ID FROM PO_LINE_LOCATIONS_V PLL WHERE 1=1 AND LTRIM(PLL.LINE_LOCATION_ID,'\1234567890') IS NULL --AND TRANSLATE(PLL.LINE_LOCATION_ID, '\1234567890 ', '\') IS NULL 补充一点： to_number(...)中只能接受数字如122或数字型字符串'122'，接受'aaa'会报错“无效字符”。