如何選擇與各自的員工

Question

ID EMP_ID EMP_NAE MANAGER_ID 
1  1  KARAN  2 
2  2  K VEDI  3 
3  3  SOMYA  2 
4  4  KAVITA  3 
5  5  AMAN  2 

Answer 1

所有經理對於員工的名單和他們的經理用這樣的：

select emp_nae as [Employee name], man.emp_nae as [Manager name] 
from tablename as emp 
left join tablename as man on man.emp_id = emp.manager_id 

管理者的列表，並thier員工使用：

select emp_nae as [Employee name], man.emp_nae as [Manager name] 
from tablename as man 
join tablename as emp on man.emp_id = emp.manager_id