目录1、REGEXP2、LIKE3、区别与选择1、REGEXP 用途：高级字符串匹配，使用正则表达式。特点：灵活性强，能进行复杂模式匹配（如开头、结尾、字符集等）。基本语法：
i have stored the txtfile in the database.i need to show the txtfile when i clik the link. and this link has to be created dynamically.
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