創建一個SQL查詢

Question

我有這個表：Tables link

，我需要創建查詢，返回Payment_ID，門票ID或BILL ID（這取決於類型），其中業務員ID是「02」。

我嘗試這樣做，但它不工作：

select p.payment_id, p.id_ticket, p.id_bill 
from Payment as p, Ticket as t, Bill as b 
where p.id_ticket=t.id_ticket 
and p.id_bill=b.id_bill 
and and t.id_salesman in ('02') 
and b.id_salesman in ('02') 

我真的很感激任何幫助。提前致謝。

Answer 1

select p.payment_id, p.id_ticket, p.id_bill 
from Payment as p, Ticket as t, Bill as b 
where p.id_ticket=t.id_ticket 
and p.id_bill=b.id_bill 
and t.id_salesman in ('02') 
and b.id_salesman in ('02') 

你還需要加入ticket與bill類似：

ticket.id = bill.id