题解 | #将所有to_date为9999-01-01的全部更新为NULL#
将所有获取奖金的员工当前的薪水增加10%
http://www.nowcoder.com/practice/d3b058dcc94147e09352eb76f93b3274
update salaries set salaries.salary = salaries.salary*(1.1)
where salaries.to_date='9999-01-01' and salaries.emp_no in(select emp_no from emp_bonus)
使用update更新数据,再来熟系一下update的语法:update table_name set ‘column’=‘value’ where condition