需要關於SQL查詢的幫助？

Question

IST與每個倉庫的位置和由該供應商提供的產品的數量各供應商的名稱，並在該倉庫庫存

Answer 1

表不應被連接在一起，然後在那裏應該應用子句由過濾器銷售代表Jim Burns。

select c.name, w.location 
from Salesrep s 
join Warehouse w 
on s.Rep_No = w.Rep_No 
join Customer c 
on w.Warehouse_No = c.Warehouse_No 
where s.Name = 'Jim Burns' 

Answer 2

SELECT 
    c.Name, 
    w.Location 
FROM salesrep as s 
LEFT JOIN warehouse as w ON w.Rep_No = s.Rep_No 
LEFT JOIN Customer as c ON c.Warehouse_No = w.Warehouse_No 
WHERE s.Name = 'Rep Jim Burns';