agens-graph - 如何在 AgensGraph 上找到所有标签和计数获取的顶点？

Question

我想按标签列出获取的顶点。

如何找到所有标签和提取顶点的计数？

Answer 1

使用带有 distinct 关键字的 LABLE 函数。

agens=# match (f)-[:mgr]->(t) return distinct label(f), label(t);
    label    |   label    
-------------+------------
 "analyst"   | "clerk"
 "manager"   | "analyst"
 "manager"   | "clerk"
 "manager"   | "salesman"
 "president" | "manager"
(5 rows)

agens=# match (f)-[:mgr]->(t) return label(f) , label(t), count(*);
    label    |   label    | count 
-------------+------------+-------
 "analyst"   | "clerk"    | 2
 "manager"   | "analyst"  | 2
 "manager"   | "clerk"    | 2
 "manager"   | "salesman" | 4
 "president" | "manager"  | 3
(5 rows)