SQLserver 兩表聯查及三表聯查 兩種方法
- 列表內容
–合同表顯示 跟使用者表聯查
SELECT * FROM dbo.Contract
SELECT h.Contract_id,h.Contract_Name,y.NetName,h.Contract_Money,h.Contract_Time,h.Contract_Enclosure
FROM Contract h JOIN dbo.Users y on h.UsersID = y.ID
SELECT * FROM USERS
SELECT h.Contract_id,h.Contract_Name,Y.ID,y.NetName,h.Contract_Money,h.Contract_Time,h.Contract_Enclosure
from Contract h JOIN dbo.Users y on h.UsersID = y.ID
–======================================
–物品表 使用者表 借用表 三表聯查
–======================================
———–第一種方法
SELECT * froM dbo.Goods
Goods_ID
Select Top 4 h.Contract_id,h.Contract_Name,y.NetName,h.Contract_Money,h.Contract_Time,h.Contract_Enclosure From Contract h JOIN dbo.Users y on h.UsersID = y.ID where (Contract_id Not In (Select Top 0 Contract_id From Contract h JOIN dbo.Users y on h.UsersID = y.ID where Contract_Name like ‘%二號合同%’ Order by Contract_id asc)) And Contract_Name like ‘%二號合同%’ Order by Contract_id ASC
————第二種方法
SELECT b.Borrow_ID,g.Goods_Name,b.Borrow_Time,b.Borrow_Days,u.NetName,b.Borrow_Reason
,b.Borrow_State FROM dbo.Borrow b
JOIN dbo.Goods g ON b.Goods_Name=g.Goods_Name
JOIN dbo.Users u on b.UID=u.ID
SELECT b.Borrow_ID,g.Goods_Name,b.Borrow_Time,b.Borrow_Days,u.NetName,b.Borrow_Reason
,b.Borrow_State FROM dbo.Borrow b , dbo.Goods g , dbo.Users u where b.Goods_Name=g.Goods_Name and b.UID=u.ID
SELECT * FROM dbo.Borrow