它与对单字节数据类型使用LENGTH函数类似。
It is similar to the LENGTH function when used against a single-byte data type.
如果使用双字节数据类型作为输入,它就会给出双倍的length函数值。
It gives double the LENGTH function value if double-byte data type is used as input.
这个字节数组包含INTEGER数据类型结构的所有字节。
This byte array will hold all the bytes of the INTEGER data type structure.
So might have been seen long and that might be correct on some servers, but very, very often the data type called "long" is actually 4 bytes.
你们有可能看到过long,那个在一些服务器上是正确的,但是非常,非常普遍的是,那个叫做“long“的数据类型,只占有4个字节。
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