在SQL中连接两个表

我正在寻找一个从表1和表2生成结果的解决方案。有关详细信息，请参见下图

Table1.OrderID=Table2.OrderID

我不是在寻找一个简单的连接查询。在输出表1中，值不重复

select Table1.*, Table2.Items, Table2.Quantity -- List the columns you want. I've specified the table name to avoid ambiguous column errors, and * means all columns
from Table1
inner join Table2 -- This is a join (inner gets only the records that exist in both tables)
on Table1.OrderID = Table2.OrderID -- This is the join condition, you define which columns are the same between the tables

对于空白位，因为您缺乏在显示层中处理此问题的意识：

with CTE as
(
select Table1.*, 
       Table2.Items, 
       Table2.Quantity,
       row_number() over(partition by Table1.OrderID order by Items ) as rn
    from Table1
    inner join Table2 
    on Table1.OrderID = Table2.OrderID 
)

select case when rn = 1 then OrderID end as OrderID,
       case when rn = 1 then CustomerName end as CustomerName ,
       case when rn = 1 then CTE.Desc end as Desc,
       Items,
       Quantity
from CTE

---

最后，我找到了一个解决方案，解决了我一直在寻找的问题

WITH MasterTable as (SELECT ROW_NUMBER() OVER(PARTITION BY OrderID ORDER BY OrderID ASC) AS SlNo,* FROM Table1),
DetailTable as (SELECT ROW_NUMBER() OVER(PARTITION BY OrderID ORDER BY OrderID ASC) AS SlNo,* FROM Table2)

SELECT * FROM MasterTable A FULL JOIN DetailTable B
ON A.OrderID = B.OrderID AND A.SlNo=B.SlNo
ORDER BY B.OrderID

---

您可以通过在（按顺序划分）上使用行数（）来实现此结果。 代码：

输出：

orderid custname    Descp   item    quentity
   1    Ccustomer1  1item   Pen     1
   2    Ccustomer2  2item   Ball    2
                             Bat    1
   3    Ccustomer3  3item   Book    2
                            Box     1
                            Bag     1
                            Pen     2

---

这是一个基本的连接。显示您的查询尝试！请将脚本和数据发布为文本，而不是图像。请进行一些研究，这不是您需要在此处提出的问题，您可以通过快速搜索找到答案。示例一：@Vinoth_S，right join-为什么？我不是在寻找join查询。请重新检查我的结果。在输出表1中，值不重复。这将是一个好朋友。你搞定了。好：——）

orderid custname    Descp   item    quentity
   1    Ccustomer1  1item   Pen     1
   2    Ccustomer2  2item   Ball    2
                             Bat    1
   3    Ccustomer3  3item   Book    2
                            Box     1
                            Bag     1
                            Pen     2