獲取公司所有未激活的工作

Question

tbl_posting_job_info

tbl_company_info

company_id  companyname 
--------------------------- 
1    XYZ 
4    PQR 
8    LMN 

現在我想這沒有連一個「積極的」作業的公司的信息。

Answer 1

select * 
from tbl_company_info c 
where not exists 
     (
     select * 
     from tbl_posting_job_info j 
     where j.company_id = c.company_id 
       and j.status = 'active' 
     ) 

Answer 2

select * 
from tbl_company_info a 
where Isnull((
     select count(*) 
     from tbl_posting_job_info b 
     where a.company_id = b.company_id 
       and a.status = 'active' 
     ),0) = 0