本文的内容针对MySQL 3.23.7alpla，实际上很多内容是通用的。另外，参考手册的几个附录也是很有价值的，但由于时间有限，未能译出，可参见原文。- This article content in view of MySQL 3.23.7alpla, very many contents is general in fact. Moreover, the reference manual several appendices also are very valuable, but be