UPDATE 表名称 SET 字段名1 = 值1, 字段名2=值2,……  【WHERE  条件】;

UPDATE 表1，表2,……   SET  表1.字段名1 = 值1, 表1.字段名2=值2,表2.字段1 = 值1, 表2.字段2=值2……  【WHERE  条件】;

#修改所有人的基本工资，涨薪5%

UPDATE t_salary

SET basic_salary = basic_salary * 1.05;

#修改”孙俪”的手机号码为”13709098765″，生日为”1982-09-26″

UPDATE t_employee SET tel = ‘13709098765’,birthday = ‘1982-09-26’

WHERE ename = ‘孙俪’;

#修改”邓超”的入职日期为今天

UPDATE t_employee SET hiredate = CURDATE() WHERE ename =’邓超’;

#修改”咨询部”的主管id为6

UPDATE t_department SET manager_id =6 WHERE did = 2;

#修改”教学部”的主管id为1

UPDATE t_department SET manager_id =1 WHERE did = 1;

#修改”教学部”的主管id为”孙红雷”的编号

UPDATE t_department,t_employee

SET t_department.manager_id =t_employee.eid

WHERE t_department.`dname` = ‘教学部’

 AND t_department.`did` = t_employee.`dept_id`

 AND t_employee.ename = ‘孙红雷’;

#修改所有员工的领导编号为该员工所在部门的主管编号

UPDATE t_employee,t_department

SET t_employee.mid = t_department.manager_id

WHERE t_employee.dept_id = t_department.did;

#修改教学部的主管编号，以及该部门所有员工的领导编号为”邓超”的编号

UPDATE t_department,t_employee

SET t_department.manager_id =t_employee.eid

WHERE t_department.`dname` = ‘教学部’

 AND t_department.`did` = t_employee.`dept_id`

 AND t_employee.ename = ‘邓超’;

UPDATE t_employee,t_department

SET t_employee.mid = t_department.manager_id

WHERE t_employee.dept_id = t_department.did

 AND t_department.`dname` = ‘教学部’;