摘要: 基本的SQL语句:1. 检索数据使用查询:SELECT、FROM关键字查看所有:SELECT * FROM <table>选择特定的列:SELECT employeeid, firstname, lastname FROM employees使用WHERE子句:SELECT firstname, lastname, country FROM employees WHERE countr... 阅读全文
posted @ 2009-08-12 16:24 起源 阅读(455) 评论(0) 推荐(0)