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csdn
18 年
有关to_number的问题,恭候牛人来访
我有一个表,它的其中一个字段,既存了汉字,又存了英文字母,还存了半角数字。 现在,我想把其中存了数字的数据检索出来,且它的范围在0~1000之间。 注:该字段类型是NVARCHAR2 如果不过滤的话,当我用to_number的时候,会弹ORA-01722的错误,如何把不是数字 ...
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