我需要像这样查询:
按照以下职位的顺序显示员工的所有详细信息:总监,监督员,工程师和秘书。
Employees表结构如下:
(的的Employee_ID 下,名字,姓氏,JOB_ID)
Jobs平板电脑结构如下:
(的 JOB_ID 下,JOB_TITLE,Min_Salary,MAX_SALARY)
我如何按照这样的特定群体进行分组?
非常感谢。
答案 0 :(得分:1)
select
*
from employees employees
join jobs jobs
on employees.job_id = jobs.job_id
order by case
when job_title = 'DIRECTOR' then
1
when job_title = 'SUPERVISOR' then
2
when job_title = 'ENGINEER' then
3
when job_title = 'CLERK' then
4
else
0 end
答案 1 :(得分:0)
select case
when job_title = 'DIRECTOR' then
1
when job_title = 'SUPERVISOR' then
2
when job_title = 'ENGINEER' then
3
when job_title = 'CLERK' then
4
else
0
end as seq,
employees.*,
jobs.*
from employees
join jobs
on employees.job_id = jobs.job_id
order by 1
答案 2 :(得分:0)
如果您使用的是MySQL(如“mysqli”标签所示),请使用字段函数:
SELECT e.*
FROM Employee e INNER JOIN
Job J
ON J.Job_ID = E.Job_ID
ORDER BY field(J.Job_Title, 'DIRECTOR', 'SUPERVISOR', 'ENGINEER', 'CLERK');