在单个查询中计算度和出度

Question

我可以使用以下查询＆＃34; In Degree＆＃34;成功：

match a=(p:Person)-->(q:Person{Address:'0xa1e4380a3b1f749673e270229993ee55f35663b4'})
RETURN count(a) as In_Degree

我可以使用以下查询＆＃34; Out Degree＆＃34;成功：

match a=(p:Person)<--(q:Person{Address:'0xa1e4380a3b1f749673e270229993ee55f35663b4'})
RETURN count(a) as Out_Degree

但是当我同时兼顾并写下如下查询时，Cypher正在给出＆＃34; Out Degree＆＃34;的结果。

match a=(p:Person)-->(q:Person{Address:'0xa1e4380a3b1f749673e270229993ee55f35663b4'}),b=(r:Person)<--(s:Person{Address:'0xa1e4380a3b1f749673e270229993ee55f35663b4'})
RETURN count(a) as In_Degree, count(b) as Out_Degree

我在这里遗漏了什么吗？有人可以帮我这个吗？

Answer 1

您可以尝试此查询：

MATCH (p:Person{Address:'0xa1e4380a3b1f749673e270229993ee55f35663b4'})
RETURN size((p)<--(:Person)) AS In_Degree, size((p)-->(:Person)) AS Out_Degree

干杯。