The node name structure should consist of alpha-numeric characters only.
节点名应该只由字母数字字符组成。
For our example, item_id is a char column that stores only numeric characters, as we indicate in the following statement.
对于我们的例子，item_id是一个char列，它只存储数字字符，如以下语句所示。
However, if the column is a character data type and contains only numeric characters, you can indicate this by setting the NUMERIC_STRING option to 'y.'
然而，如果列是字符数据类型，并且只包含数字字符，那么可以通过将NUMERIC_STRING选项设置为“Y”来表明这一点。
The 'Copies' field contains non-numeric characters.
“份数”字符域包含非数字的字符。
Use only alphabetic and numeric characters for these properties.
对这些属性仅使用字母和数字字符。
For example, if you try to update an integer property by using non-numeric characters, a validation exception is thrown.
例如，如果尝试使用非数值字符更新整数属性，则会引发验证异常。
For example, if you try to update an integer property by using non-numeric characters, a validation exception is thrown.
例如，如果尝试使用非数值字符更新整数属性，则会引发验证异常。
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