Neo.ClientError.Statement.SyntaxError:未定义变量行
Neo.ClientError.Statement.SyntaxError:未定义变量行
提问于 2018-05-31 05:50:18
我所做的如下所示。第一行愉快地使用了行变量，但是当循环到达(值为r，行)时，我得到了中断代码，并显示错误Neo.ClientError.Statement.SyntaxError:变量行未定义
Cypher执行失败，并显示以下错误: Neo.ClientError.Statement.SyntaxError:变量行未定义(第12行，第20列(偏移量: 469)) "WITH value.r AS r，line“^
LOAD CSV WITH HEADERS FROM "file:///the-file-name.csv" as
line FIELDTERMINATOR ','
with line as line
OPTIONAL MATCH (n:Region)
WHERE n.region contains "BLANKEMPTYVIDE" AND n.identifier= line.CODE_TER
with n
CALL apoc.do.when(
n IS NULL,
'MERGE (r:Region{region: line.TERRITOIRE}) ON CREATE SET r.description=line.TERRITOIRE ON CREATE SET r.identifier=line.CODE_TER ON CREATE SET r.id = toString(id(r)) RETURN r',
'RETURN n AS r',
{}) YIELD value
WITH value.r AS r, line
SET r.identifier=line.CODE_TER
SET r.description=line.TERRITOIRE
SET r.region=line.TERRITOIRE
WITH r,line
OPTIONAL MATCH (ci:City) where ci.cityName contains "BLANKEMPTYVIDE" AND ci.regionIdentifier= line.CODE_TER
CALL apoc.do.when(
ci IS NULL,
'MERGE (c:City {cityName:line.BRICK}) ON CREATE SET c.identifier=line.CODE_BRICK ON CREATE SET c.region=line.TERRITOIRE ON CREATE SET c.regionIdentifier=line.CODE_TER ON CREATE SET c.zip=line.CODE_BRICK ON CREATE SET c.description=line.BRICK ON CREATE SET c.id = toString(id(c)) RETURN c',
'RETURN ci AS c',
{}) YIELD value
WITH value.c AS c,line,r
SET c.identifier=line.CODE_BRICK
SET c.region=line.TERRITOIRE
SET c.regionIdentifier=line.CODE_TER
SET c.zip=line.CODE_BRICK
SET c.description=line.BRICK
SET c.cityName=line.BRICK
WITH c,r,line
MATCH (c {identifier:line.CODE_BRICK}),(r {identifier:line.CODE_TER})
MERGE (c)-[:IS_A_City_BELONGING_TO]->(r)
WITH c,r,line
OPTIONAL MATCH (sec:Sector)
WHERE sec.description contains "BLANKEMPTYVIDE" AND sec.regionIdentifier=line.CODE_TER
CALL apoc.do.when(
sec IS NULL,
'MERGE (s:Sector {sectorName:line.SOUSBRICK}) ON CREATE SET s.identifier=line.CODE_SBRICK ON CREATE SET s.region=line.TERRITOIRE ON CREATE SET s.regionIdentifier=line.CODE_TER ON CREATE SET s.city=line.BRICK ON CREATE SET s.cityIdentifier=line.CODE_BRICK ON CREATE SET s.description=line.SOUSBRICK ON CREATE SET s.zip=line.SOUSBRICK ON CREATE SET s.id = toString(id(s)) RETURN s',
'RETURN sec AS s',
{}) YIELD value
WITH value.s AS s,line,c,r
SET s.identifier=line.CODE_SBRICK
SET s.region=line.TERRITOIRE
SET s.regionIdentifier=line.CODE_TER
SET s.city=line.BRICK
SET s.cityIdentifier=line.CODE_BRICK
SET s.description=line.SOUSBRICK
SET s.zip=line.SOUSBRICK
SET s.sectorName = line.SOUSBRICK
WITH s,c,r,line
MATCH (s {identifier:line.CODE_SBRICK}),(r{identifier:line.CODE_TER})
MERGE (s)-[:IS_A_SECTOR_BELONGING_TO_THAT_REGION]->(r)
WITH s,c,r,line
MATCH (s {identifier:line.CODE_SBRICK}),(c{identifier:line.CODE_BRICK})
MERGE (s)-[:IS_A_SECTOR_BELONGING_TO_THAT_CITY]->(c)上一个问题 How to make the Cypher request to handle those both cases without duplicating Nodes 上有--name.csv
我把cybersam和Dave的建议更新到这里，非常感谢你们。
LOAD CSV WITH HEADERS FROM "file:///the-file-name.csv" as line
FIELDTERMINATOR ','
with line as line
OPTIONAL MATCH (n:Region)
WHERE n.region contains "BLANKEMPTYVIDE" AND n.identifier= line.CODE_TER
WITH n, line
CALL apoc.do.when(
n IS NULL,
'MERGE (r:Region{region: line.TERRITOIRE}) ON CREATE SET r.description=line.TERRITOIRE ON CREATE SET r.identifier=line.CODE_TER ON CREATE SET r.id = toString(id(r)) RETURN r',
'RETURN n AS r',
{n: n, line: line}) YIELD value
WITH value.r AS r, line
SET r.identifier=line.CODE_TER
SET r.description=line.TERRITOIRE
SET r.region=line.TERRITOIRE
WITH r,line
OPTIONAL MATCH (ci:City) where ci.cityName contains "BLANKEMPTYVIDE" AND ci.regionIdentifier= line.CODE_TER
CALL apoc.do.when(
ci IS NULL,
'MERGE (c:City {cityName:line.BRICK}) ON CREATE SET c.identifier=line.CODE_BRICK ON CREATE SET c.region=line.TERRITOIRE ON CREATE SET c.regionIdentifier=line.CODE_TER ON CREATE SET c.zip=line.CODE_BRICK ON CREATE SET c.description=line.BRICK ON CREATE SET c.id = toString(id(c)) RETURN c',
'RETURN ci AS c',
{ci: ci, line: line}) YIELD value
WITH value.c AS c,line,r
SET c.identifier=line.CODE_BRICK
SET c.region=line.TERRITOIRE
SET c.regionIdentifier=line.CODE_TER
SET c.zip=line.CODE_BRICK
SET c.description=line.BRICK
SET c.cityName=line.BRICK
WITH c,r,line
MATCH (c {identifier:line.CODE_BRICK}),(r {identifier:line.CODE_TER})
MERGE (c)-[:IS_A_City_BELONGING_TO]->(r)
WITH c,r,line
OPTIONAL MATCH (sec:Sector)
WHERE sec.description contains "BLANKEMPTYVIDE" AND sec.regionIdentifier=line.CODE_TER
CALL apoc.do.when(
sec IS NULL,
'MERGE (s:Sector {sectorName:line.SOUSBRICK}) ON CREATE SET s.identifier=line.CODE_SBRICK ON CREATE SET s.region=line.TERRITOIRE ON CREATE SET s.regionIdentifier=line.CODE_TER ON CREATE SET s.city=line.BRICK ON CREATE SET s.cityIdentifier=line.CODE_BRICK ON CREATE SET s.description=line.SOUSBRICK ON CREATE SET s.zip=line.SOUSBRICK ON CREATE SET s.id = toString(id(s)) RETURN s',
'RETURN sec AS s',
{sec: sec, line: line}) YIELD value
WITH value.s AS s,line,c,r
SET s.identifier=line.CODE_SBRICK
SET s.region=line.TERRITOIRE
SET s.regionIdentifier=line.CODE_TER
SET s.city=line.BRICK
SET s.cityIdentifier=line.CODE_BRICK
SET s.description=line.SOUSBRICK
SET s.zip=line.SOUSBRICK
SET s.sectorName = line.SOUSBRICK
WITH s,c,r,line
MATCH (s {identifier:line.CODE_SBRICK}),(r{identifier:line.CODE_TER})
MERGE (s)-[:IS_A_SECTOR_BELONGING_TO_THAT_REGION]->(r)
WITH s,c,r,line
MATCH (s {identifier:line.CODE_SBRICK}),(c{identifier:line.CODE_BRICK})
MERGE (s)-[:IS_A_SECTOR_BELONGING_TO_THAT_CITY]->(c)结果是：
设置了28271个属性，创建了3400个关系，在34985毫秒后完成。
将csv加载到neo4j数据库大约需要35秒。请问它在性能视图中是完美的吗？
对于包含1665个csv行的csv文件，每行包含6个字段：(Region)的两个第一个字段，第三和第四个(City)，以及(Sector)的第五和第六个字段。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/50613814
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