一个表可以使用tbl_name AS ALIAS_NAME 或 tbl_name ALIAS_NAME指定别名：
SELECT t1.name, t2.salary FROM employee AS t1, info AS t2 WHERE t1.name = t2.name;
SELECT t1.name, t2.salary FROM employee t1, info t2 WHERE t1.name =t2.name;
再看一个实例:
SELECT employee.first_name, job.title, duty.task FROM employee LEFT JOIN job ON employee.ID = job.ID LEFT JOIN duty ON employee.ID = duty.ID WHERE (job.title = 'Manager');
通过此文希望大家能理解掌握mysql as 的知识资料，谢谢大家对本站的支持！
