目录一、CHAR和VARCHAR有哪些区别1、固定长度 & 可变长度2、存储方式3、存储容量 CHAR二、CHAR和VARCHAR在SQL中需要注意的点三、类似的二进制类型：VARBINARYCHAR和VARCHAR是mysql中两种最重要的字符串类型，两者
I am developing some JavaScript that should work with either Prototype.js or JQuery, thus I need some way to i开发者_开发知识库dentify what is the primary library in use. How can I do that?You can che
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