如何从csv文件导入数据

我是neo4j的新手，我正在尝试从两个csv文件导入数据，但我无法做到这一点。 这两个csv文件具有以下结构：

master.csv：

ID    NAME    LASTNAME     COLLEGE

award.csv：

playerID    award                  year

我如何为玩家和奖励创建节点，以及如何连接它们

我试着使用这个代码：（但显然它不起作用）

如果我还要为学院添加节点，对吗

CREATE CONSTRAINT ON (c:COLLEGE) ASSERT c.name IS UNIQUE;

USING PERIODIC COMMIT 
LOAD CSV WITH HEADERS FROM "file:///master.csv" as line fieldterminator ';'
WITH line
MATCH (player:PLAYER {id:line.playerID})
MERGE (college:COLLEGE {name:line.college}})
CREATE (player)-[:studied]->(college)

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谢谢

据我所知，主要是在你的陈述中使用正确的CASE/CASE/CASE。根据您显示的输入，我得出以下结论（为我工作）：

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希望这有帮助，Tom

*…MATCH（player:player）…一切看起来都很好，问题可能是您试图在单个事务中运行它。。。您必须在单独的事务中创建每个约束，然后分别运行第一个LOAD CSV和第二个LOAD CSV。csv文件可能有问题吗？首先感谢您回答我，但当我运行第二个命令时，它会返回以下内容：（无更改，无记录）您能否共享输入文件的实际内容（标题和前几行就可以了）（上面不能是它们，因为您声明使用了分隔符）。如果大小写有任何不同，它将不起作用。是的，当然，两个文件的格式相同。我也尝试过使用fieldterminator'\t'，但结果相同。Tok，award_players.csv与您和我的声明一致。您还可以共享master.csv文件吗？当然，谢谢！！

01          best_player            2010
01          rookie_of_the_year     2011
02          best_player            2012

CREATE CONSTRAINT ON (a:PLAYER) ASSERT a.id IS UNIQUE;

CREATE CONSTRAINT ON (b:AWARD) ASSERT b.award IS UNIQUE;

USING PERIODIC COMMIT 
LOAD CSV WITH HEADERS FROM "File:///master.csv" as line fieldterminator ';'
CREATE (:PLAYER {id:line.playerID, name:line.firstName, lastName:line.lastName});

USING PERIODIC COMMIT 
LOAD CSV WITH HEADERS FROM "File:///award.csv" as line fieldterminator ';'
MATCH (player:Player {id:line.playerID})
MERGE (award:AWARD {award:line.award})
CREATE (player)-[r:won]->(award)
set r += {year:line.year}

CREATE CONSTRAINT ON (c:COLLEGE) ASSERT c.name IS UNIQUE;

USING PERIODIC COMMIT 
LOAD CSV WITH HEADERS FROM "file:///master.csv" as line fieldterminator ';'
WITH line
MATCH (player:PLAYER {id:line.playerID})
MERGE (college:COLLEGE {name:line.college}})
CREATE (player)-[:studied]->(college)

CREATE CONSTRAINT ON (a:PLAYER) ASSERT a.id IS UNIQUE;
CREATE CONSTRAINT ON (b:AWARD) ASSERT b.award IS UNIQUE;

USING PERIODIC COMMIT 
LOAD CSV WITH HEADERS FROM "file:///master.csv" as line fieldterminator ';'
CREATE (:PLAYER {id:line.bioID, name:line.firstName, lastName:line.lastName});

USING PERIODIC COMMIT 
LOAD CSV WITH HEADERS FROM "file:///award_players.csv" as line fieldterminator ';'
WITH line
MATCH (player:PLAYER {id:line.playerID})
MERGE (award:AWARD {award:line.award})
CREATE (player)-[r:won]->(award)
SET r += {year:line.year};