mysql大于号小于号转义

大于号和小于号在MyBatis中需要进行转义，否则会出现意想不到的错误。这是因为在MyBatis的mapper XML文件中，大于号和小于号被视为标签符号，与SQL中的符号发生冲突，导致解析过程出现问题。为了解决这个问题，可以采用两种方案。

方案一是使用转义写法，将大于号和小于号替换为对应的转义字符。例如，将大于号替换为">"，将小于号替换为"<"。

方案二是使用CDATA标记，将SQL语句包裹在<![CDATA<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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