Sql server 使用同一列SQL Server的多个联接

我必须从

GraphNodes

中选择

id

，而相同的

id

存在于

GraphEdges

的两列中，即

源节点

和

目标节点

。表的结构如下：

图形节点

+---+---------+-------------------+------------+-----------+
| id | Node_ID | Node             | Node_Label | Node_Type |
+---+---------+-------------------+------------+-----------+
| 1  |  677    | Nuno Vasconcelos | Author     |    1      |
| 2  |  1359   | Peng Shi         | Author     |    1      |
| 3  |  6242   | Z. Q. Shi        | Author     |    1      |
+----+---------+------------------+------------+-----------+    

+------------+------------------+-------------+------------------+------+-----------+
|Source_Node | Source_Node_Type | Target_Node | Target_Node_Type | Year | Edge_Type |
+------------+------------------+-------------+------------------+------+-----------+
| 1          |  1               |  10965      |     2            | 2005 |   1       |
| 1          |  1               |  10179      |     2            | 2007 |   1       |
| 1          |  1               |  10965      |     2            | 2007 |   1       |
+------------+------------------+-------------+------------------+------+-----------+  

图形边缘

+---+---------+-------------------+------------+-----------+
| id | Node_ID | Node             | Node_Label | Node_Type |
+---+---------+-------------------+------------+-----------+
| 1  |  677    | Nuno Vasconcelos | Author     |    1      |
| 2  |  1359   | Peng Shi         | Author     |    1      |
| 3  |  6242   | Z. Q. Shi        | Author     |    1      |
+----+---------+------------------+------------+-----------+    

+------------+------------------+-------------+------------------+------+-----------+
|Source_Node | Source_Node_Type | Target_Node | Target_Node_Type | Year | Edge_Type |
+------------+------------------+-------------+------------------+------+-----------+
| 1          |  1               |  10965      |     2            | 2005 |   1       |
| 1          |  1               |  10179      |     2            | 2007 |   1       |
| 1          |  1               |  10965      |     2            | 2007 |   1       |
+------------+------------------+-------------+------------------+------+-----------+  

我只显示了两个表的3行，只是为了了解表的结构。我将查询用作：

SELECT GN.id as Node_ID, 
       COUNT(DISTINCT(CONCAT(GE.Source_Node, '-', GE.Target_Node))) 
       AS Mutual_Links -- OR Node_Degree
FROM GraphEdges GE
JOIN GraphNodes GN ON GN.id = GE.Source_Node --How to JOIN this
                  AND GN.id = GE.Target_Node --How to JOIN this
WHERE (Source_Node IN (SELECT id FROM GraphNodes 
                       WHERE id BETWEEN 1 AND 510) 
                       AND Edge_Type IN (1, 2, 3))
OR (Target_Node IN (SELECT id FROM GraphNodes 
                    WHERE id BETWEEN 1 AND 510) 
                    AND Edge_Type IN (1, 2, 3))
GROUP BY GN.id

我希望以以下形式输出：

+--------+-------------+
|Node_ID | Mutual_Links|
+--------+-------------+
|  1     | 31          |
|  2     | 23          |
|  3     | 12          |
| ...    | ...         |
+--------+-------------+  

---

问题是如何将

图形

与

图形节点

连接起来，我可以获得

id

或

Node\u id

表单

图形节点

并计算

图形节点

中不同的相互链接

像这样的怎么样

;with thedata ( id, MutualLinks ) 
as (Select id, MutualLinks = count(*) from [dbo].[GraphNodes]
inner join [dbo].[GraphEdges] on Source_node = node_id
group by id 
union all
Select id, MutualLinks = count(*)   from [dbo].[GraphNodes]
inner join [dbo].[GraphEdges] on target_node = node_id
group by id )
Select id, total = sum(MutualLinks)
from thedata
group by id

---

@CameroFront--无法获取此查询正在执行的操作？但它应该可以工作吗？它将源和目标视为两个独立的结果集，我通过UNION语句将它们合并在一起。我使用公共表表达式（CTE）将它们合并为单个查询结果集，然后将它们相加。在这种情况下，CTE就像一个临时表。@camerfront——它没有给出所需的结果results@Cameront--我们可以聊聊吗？我提出了另一个解决方案，形式是要讨论的查询？好的。如果你愿意的话，你可以把你如何解决这个问题的细节发给我。