解题思路 1、先找到当前员工的工资和信息 2、查询到当前员工的奖金率SELECT t1.emp_no,t1.first_name,t1.last_name, btype,t1.salary, case btypeWHEN 1 THEN salary*0.1WHEN 2 THEN salary*0.2ELSE salary* 0.3 END bonusFROM (SELECT e.emp_no,e.first_name,e.last_name,s.salary FROM employees e JOIN salaries s ON e.emp_no = s.emp_no...