如何在py2neo中将参数传递给cypher查询

Question

我有一个变量name ="Rahul",我想以下列方式将此变量传递给Py2neo中的cypher查询:

line=session.execute("MATCH (person)WHERE person.name=name RETURN person")

但我收到一个错误 -

"py2neo.cypher.InvalidSyntax: name not defined (line 1, column 33)"

如何在py2neo中传递变量

Answer 1

如果name是参数,则需要将其括在花括号中.您的查询应该类似于

MATCH (person) WHERE person.name = {name} RETURN person

您的Python代码可能看起来如下

graph_db = neo4j.GraphDatabaseService()
qs = 'MATCH (person) WHERE person.name = {name} RETURN person'
query = neo4j.CypherQuery(graph_db, qs)
results = query.execute(name='Rahul')
print results