If both values are of type CHAR, the result is also of type CHAR.
如果两个值都是char类型，结果还是char类型。
The second difference is more subtle: The CHAR type is always the length you specify.
第二个区别比较微妙：CHAR类型的长度总是指定的长度。
The second difference is more subtle: The CHAR type is always the length you specify.
第二个区别比较微妙：CHAR类型的长度总是指定的长度。
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