Neo4j-加载CSV未创建所有节点

我刚刚开始学习Neo4J，我正在尝试使用load CSV和以下脚本将一些数据加载到Neo4J 3.1中：

USING PERIODIC COMMIT 1000
LOAD CSV WITH HEADERS FROM "file:///Fake59.csv" AS line
MERGE (person:Person {firstName: line.GivenName, middleInitial: line.MiddleInitial, lastName: line.Surname, title: line.Title,
gender: line.Gender, birthday: line.Birthday, bloodType: line.BloodType, weight: line.Pounds, height: line.FeetInches})
MERGE (contact:Contact {phoneNumber: line.TelephoneNumber, email: line.EmailAddress})
MERGE (person)-[:CONTACTED_AT]->(contact)
MERGE (color:Color {name: line.Color})
MERGE (person)-[:FAVORITE_COLOR]->(Color)
MERGE (address:Address {streetAddress: line.StreetAddress, city: line.City, zipCode: line.ZipCode})
MERGE (person)-[:LIVES_AT]->(address)
MERGE (state:State {abbr: line.State, name: line.StateFull})
MERGE (city)-[:STATE_OF]->(stage)
MERGE (country:Country {name: line.CountryFull, abbr: line.Country, code: line.TelephoneCountryCode})
MERGE (state)-[:IN_COUNTRY]->(country)
MERGE (credentials:Credentials {userName: line.Username, password: line.Password, GUID: line.GUID})
MERGE (person)-[:LOGS_in]->(credentials)
MERGE (browser:Browser {agent: line.BrowserUserAgent})
MERGE (person)-[:BROWSES_WITH]->(browser)
MERGE (creditCard:CreditCard {number: line.CCNumber, cvv2: line.CVV2, expireDate: line.CCExpires})
MERGE (person)-[:USES_CC]->(creditCard)
MERGE (creditCompany:CreditCompany {name: line.CCType})
MERGE (creditCard)-[:MANAGED_BY]->(creditCompany)
MERGE (occupation:Occupation {name: line.Occupation})
MERGE (person)-[:WORKS_AS]->(occupation)
MERGE (company:Company {name: line.Company})
MERGE (person)-[:WORKDS_FOR]->(company)
MERGE (company)-[:EMPLOYES]->(occupation)
MERGE (vehicle:Vehicle {name: line.Vehicle})
MERGE (person)-[:DRIVES]->(vehicle)

输入文件大约有50k行。它运行了几个小时，这个过程并没有结束，但在此之后，如果我查询数据库，我看到只有节点类型（Person）被创建。如果我运行一个包含3个条目的较小文件，则只会创建所有其他节点和关系

我已经更改了分配给Neo4j和JVM的内存量，但仍然没有成功。我知道执行MERGE比CREATE需要更长的时间，但我正试图避免使用insert重复节点

关于我应该改变什么或如何改进这一点，有什么想法或建议吗

谢谢,

---

--MD.

尝试将查询拆分为多个较小的查询。效果更好，更易于管理。另外，当使用

MERGE

时，您通常应该希望在单个属性上执行此操作，如个人电子邮件或独特的内容，然后在创建集上使用

。我们应该加快这个问题。看起来像这样：

MERGE (contact:Contact {email: line.EmailAddress})
ON CREATE SET contact.phoneNumber = line.TelephoneNumber

对于没有单一唯一属性的人，您可以使用多个属性的组合，但要知道，在
合并中添加的每个属性都会减慢查询速度

MERGE (person:Person {firstName: line.GivenName, middleInitial: line.MiddleInitial, lastName: line.Surname}) 
ON CREATE SET person.title = line.Title, person.gender = line.Gender,
person.birthday = line.Birthday, person.bloodType = line.BloodType, 
person.weight = line.Pounds, person.height = line.FeetInches

您是否对相关节点的唯一属性具有约束和/或索引？您需要将此信息与Tomaz的建议结合起来，以加快合并的速度。谢谢您对Tomaz和InverseFalcon的建议。一个后续问题。在Person和Contact的情况下，我将能够与节点变量Person和Contact建立边缘/关系，对吗？