不使疯

摘要： MySQL 基础语句 多个知识点 排序：order by desc-降序 asc-升序（默认） select * from student order by stuno desc distinct 去掉重复的值 select distinct classno from student insert 阅读全文

摘要： 模糊匹配 模糊匹配 '[1-9]'、'[a-z]'、'[^4]' select * from student where pwd like '[0-9]%'select * from student where pwd like '[^a-z]%'select * from student wher 阅读全文