Sql 获取两个独立列的ID名称
我正在尝试编写一条SQL语句来生成给定的输出: 到目前为止,我已经设法使用内部JOIN和and语句来生成表的一部分: 我试图根据外键获取仓库和制造商的城市名称,但我很难找到如何根据各自的ID引用城市名称 到目前为止,我已经做到了这一点:Sql 获取两个独立列的ID名称,sql,Sql,我正在尝试编写一条SQL语句来生成给定的输出: 到目前为止,我已经设法使用内部JOIN和and语句来生成表的一部分: 我试图根据外键获取仓库和制造商的城市名称,但我很难找到如何根据各自的ID引用城市名称 到目前为止,我已经做到了这一点: SELECT s.stkName as "Stock Name", m.ManID as "Manufacturer City", w.WHID as "Warehouse City", c.CityName as "Warehouse
SELECT s.stkName as "Stock Name",
m.ManID as "Manufacturer City",
w.WHID as "Warehouse City",
c.CityName as "Warehouse City",
s.Sellingprice as "Selling Price"
FROM STOCKITEM s
INNER JOIN MANUFACTURER4787 m
on s.ManID = m.ManID
INNER JOIN WAREHOUSE w
on w.CityID = m.CityID
INNER JOIN CITY c
on w.CityID = c.CityID
WHERE STKNAME = 'Electric Fan' OR
STKNAME ='Sun Lounge' OR
STKNAME ='Whisk Combo' OR
STKNAME ='Solar Pump' OR
STKNAME ='Garden Tools'
ORDER BY STKNAME ASC;
加入时必须为
城市创建别名,否则每行只能有一个城市
试试这个:
SELECT s.StkName as 'Stock Name', cm.CityName as 'Manufacturer City',
cw.CityName as 'Warehouse City', s.SellingPrice as 'Selling Price'
FROM STOCKITEM s
INNER JOIN MANUFACTURER m ON s.ManID = m.ManID
INNER JOIN CITY cm on m.CityID = cm.CityID
INNER JOIN WAREHOUSE w ON s.WHID = w.WHID
INNER JOIN CITY cw on w.CityID = cw.CityID
哦,我现在明白了!这对我帮助很大,非常感谢你的解释!