来自 neo4j 和 python 的匹配计数
match count from neo4j and python
给出这个代码块
parent_node_count = db.run(f"MATCH(parentNode) WHERE "
f"parentNode.LC = '{x[4]}' "
f"AND parentNode.U = '{x[5]}' "
f"AND parentNode.R = '{x[6]}' "
f"AND parentNode.Type = 'Parent' "
f"AND parentNode.Deck_Set = '{outline}' "
f" return parentNode")
n = 0
for record in parent_node_count:
print(record["parent_node_count"]["id"])
n = n + 1
print("total number of records : " + str(n))
total = int(n)
如何从 MATCH 查询中获取匹配项的数量?
在提供的代码中,它总是returns 0,
我在浏览器中检查过,匹配的计数不为零。
变量parent_node_count是一个neo4j.work.result.Result对象,它不包含对象id。您需要将其添加到密码查询中并通过 record.data() 对象访问它。请参见下面的示例:
parent_node_count = tx.run(f"MATCH(parentNode) WHERE "
f"parentNode.LC = '{x[4]}' "
f"AND parentNode.U = '{x[5]}' "
f"AND parentNode.R = '{x[6]}' "
f"AND parentNode.Type = 'Parent' "
f"AND parentNode.Deck_Set = '{outline}' "
f" return parentNode, ID(parentNode) AS id")
print(parent_node_count)
n = 0
for record in parent_node_count:
print(record.data()["parentNode"])
print(record.data()["id"])
n = n + 1
print("total number of records : " + str(n))
total = int(n)
Result:
<neo4j.work.result.Result object at 0x7ff6cd035f60> <- parent_node_count
{'Latitude': 28.5553263, 'Longitude': 68.2132128, 'Name': 'Dayna'} <- record
321 <- id
{'Latitude': 54.1863169, 'Longitude': 19.7204087, 'Name': 'Dione'} <- record
333 <- id
total number of records : 2
给出这个代码块
parent_node_count = db.run(f"MATCH(parentNode) WHERE "
f"parentNode.LC = '{x[4]}' "
f"AND parentNode.U = '{x[5]}' "
f"AND parentNode.R = '{x[6]}' "
f"AND parentNode.Type = 'Parent' "
f"AND parentNode.Deck_Set = '{outline}' "
f" return parentNode")
n = 0
for record in parent_node_count:
print(record["parent_node_count"]["id"])
n = n + 1
print("total number of records : " + str(n))
total = int(n)
如何从 MATCH 查询中获取匹配项的数量?
在提供的代码中,它总是returns 0, 我在浏览器中检查过,匹配的计数不为零。
变量parent_node_count是一个neo4j.work.result.Result对象,它不包含对象id。您需要将其添加到密码查询中并通过 record.data() 对象访问它。请参见下面的示例:
parent_node_count = tx.run(f"MATCH(parentNode) WHERE "
f"parentNode.LC = '{x[4]}' "
f"AND parentNode.U = '{x[5]}' "
f"AND parentNode.R = '{x[6]}' "
f"AND parentNode.Type = 'Parent' "
f"AND parentNode.Deck_Set = '{outline}' "
f" return parentNode, ID(parentNode) AS id")
print(parent_node_count)
n = 0
for record in parent_node_count:
print(record.data()["parentNode"])
print(record.data()["id"])
n = n + 1
print("total number of records : " + str(n))
total = int(n)
Result:
<neo4j.work.result.Result object at 0x7ff6cd035f60> <- parent_node_count
{'Latitude': 28.5553263, 'Longitude': 68.2132128, 'Name': 'Dayna'} <- record
321 <- id
{'Latitude': 54.1863169, 'Longitude': 19.7204087, 'Name': 'Dione'} <- record
333 <- id
total number of records : 2