我的本能指引我返回int，但是它给底部的代码增加了很多复杂度而没有给我带来任何好处。
My instinct led me to return an int , but it adds a lot of complexity to the code at the bottom and doesn't buy my anything.
如果客户端代码没有什么可做的，这就给运行客户端的系统增加了一个负担，因为它必须使代码保持在内存中，同时止步不前。
If the client code has nothing else to do, this simply places a burden on the system running the client, since it has to keep the code hanging around in memory with nothing going on.
把这些也都加到操作系统和应用程序所需的内存值之中，可能需要增加32 MB甚至更多的内存给MySQL服务器代码以及各种不同的小静态缓冲。
Take this number add to it number of memory Operation System and other applications need, add might be 32mb more for MySQL Server code and various small static buffers.
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