如何使用Oracle query获取字符串长度

使用Oracle query获取字符串长度可以使用内置函数LENGTH或LEN。

1. 使用LENGTH函数：
2. 使用LENGTH函数：
3. 这将返回字符串的长度。
4. 使用LEN函数：
5. 使用LEN函数：
6. 这也将返回字符串的长度。

字符串长度是指字符串中字符的数量。这在许多情况下都是有用的，例如在验证输入的长度是否符合要求时或者在处理文本数据时。

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