Sql server SQL select将两个表合并为一列

SQL表权限为：

表格顺序如下：

我希望结果是：

从Authority.AuthorNo中进行选择，其中AuthorNo与Order.OrderNo中的AuthorNo相同，并且至少有一个AuthorNo.prepage为1

---

如何选择此选项？

我猜您只是想在结果中看到AuthorNo？试试这个

Select distinct a.AuthorNo
From Authority  a
join Order  b on a.AuthorNo=b.AuthorNo
where a.Prepay=1

---

如果您需要查找拥有订单的作者，这些订单也是由具有预付费的作者订购的

然后你可以使用一个EXISTS

SELECT auth.AuthorNo
FROM Authority auth
JOIN [Order] ord ON ord.AuthorNo = auth.AuthorNo
WHERE EXISTS
(
    SELECT 1
    FROM [Order] ord_pp 
    JOIN Authority auth_pp 
      ON auth_pp.AuthorNo = ord_pp.AuthorNo 
     AND auth_pp.Prepay = 1
    WHERE ord_pp.OrderNo = ord.OrderNo
)
GROUP BY auth.AuthorNo;

测验

结果:

---

你说authorNo=orderNo-怎么可能？您的订单号有两位数，而您的作者号有一位数。你能澄清一下吗？AithorNo在订单表中由OrderNo表示。AuthorNo与订单表中的OrderNo相同，也有一个是AuthorNo prepared 1。你能详细说明它的意思吗？他们都不会回答；注意：这两个表都在OrderNo列中。@MahdiYousef已更新，它适用于答案中包含的测试。已解决，非常感谢

AuthorNo
--------
   1
   2
   4
   5

Select distinct a.AuthorNo
From Authority  a
join Order  b on a.AuthorNo=b.AuthorNo
where a.Prepay=1

SELECT auth.AuthorNo
FROM Authority auth
JOIN [Order] ord ON ord.AuthorNo = auth.AuthorNo
WHERE EXISTS
(
    SELECT 1
    FROM [Order] ord_pp 
    JOIN Authority auth_pp 
      ON auth_pp.AuthorNo = ord_pp.AuthorNo 
     AND auth_pp.Prepay = 1
    WHERE ord_pp.OrderNo = ord.OrderNo
)
GROUP BY auth.AuthorNo;

AuthorNo
--------
1
2
4
5