摘要: 1. 简单查询select * from employee;select name,salary from employee; 2. where条件 1.比较运算符:> < >= <= <> != select name,salary from employee where salary > 100 阅读全文
posted @ 2017-09-07 17:30 Cool· 阅读(201) 评论(0) 推荐(0) 编辑