SELECT cr.*,
(select department from dlp_base.sys_user where user_id = cr.applicant_id) AS department,
(SELECT user.name
FROM dlp_base.sys_user user
WHERE user.user_id=cr.applicant_id
) AS applicant_name
FROM centralized_request cr
select cr.*,
(select department from dlp_base.sys_user where user_id = cr.applicant_id) as department,
(select user.name from dlp_base.sys_user user where user.user_id=cr.applicant_id ) as applicant_name
from centralized_request cr
where cr.id =#{id}