I am trying to load a csv and create nodes in neo4j 2.1.0 using the following:
USING PERIODIC COMMIT
LOAD CSV FROM "file://c:/temp/listings.TXT"
AS line FIELDTERMINATOR '\t'
CREATE (p:person { id: line[0] });
The columns are separated using 0x9 (tab) characters. But the created nodes have the entire row content in the id.
Any help is greatly appreciated.
try FIELDTERMINATOR '\\t'
that's what worked for me
Try casting toint(line[0]) since the default type when importing is string.
Open your csv file with notepad++ and try to delete the (") or to replace them with spaces.
I had the same problem but when I removed all the characters " it worked
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I'm using cypher and the neo4j browser to create nodes from csv input.
I want to read in each row of my csv file with headers and then create a node with that row as properties.
MY current code is:
LOAD CSV WITH HEADERS FROM '<yourFilePath>' AS ROW
WITH ROW
CREATE (n:node $ROW)
This throws an error saying parameter missing.
Try this
LOAD CSV WITH HEADERS FROM '<yourFilePath>' AS row
CREATE (n:node)
SET n+= row
In Cypher, variables that start with "$" must be passed to the query as parameters. Your Cypher code is locally binding values to the ROW variable (and not passing a parameter), so change $ROW to ROW.
In addition, if you want to make sure that you do not generate duplicate nodes, you should consider using MERGE instead of CREATE. But before you do so, you must carefully read the documentation on MERGE to understand how to use it properly.
I am new to neo4j.
I can't figure out what I am doing wrong?, please help.
LOAD CSV WITH HEADERS FROM "file:///C:\Users\Chandra Harsha\Downloads\neo4j_module_datasets\test.csv" as line
MERGE (n:Node{name:line.Source})
MERGE (m:Node{name:line.Target})
MERGE (n)-[:TO{distance:line.dist}]->(m)
Error message:
Invalid input 's': expected four hexadecimal digits specifying a unicode character (line 1, column 41 (offset: 40))
"LOAD CSV WITH HEADERS FROM "file:///C:\Users\Chandra Harsha\Downloads\neo4j_module_datasets\test.csv" as line"
You've got two problems here.
The immediate error is that the backslashes in the path are being seen as escape characters rather than folder separators - you either have to escape the backslashes (by just doubling them up) or use forward-slashes instead. For example:
LOAD CSV WITH HEADERS FROM "file:///C:\\Users\\Chandra Harsha\\Downloads\\neo4j_module_datasets\\test.csv" as line
MERGE (n:Node{name:line.Source})
MERGE (m:Node{name:line.Target})
MERGE (n)-[:TO{distance:line.dist}]->(m)
However - Neo4j doesn't allow you to load files from arbitrary places on the filesystem anyway as a security precaution. Instead, you should move the file you want to import into the import folder under your database. If you're using Neo4j Desktop, you can find this by selecting your database project and clicking the little down-arrow icon on 'Open Folder', choosing 'Import' from the list.
Drop the CSV in there, then just use its filename in your file space. So for example:
LOAD CSV WITH HEADERS FROM "file:///test.csv" as line
MERGE (n:Node{name:line.Source})
MERGE (m:Node{name:line.Target})
MERGE (n)-[:TO{distance:line.dist}]->(m)
You can still use folders under the import directory - anything starting file:/// will be resolved relative to that import folder, so things like the following are also fine:
LOAD CSV WITH HEADERS FROM "file:///neo4j_module_datasets/test.csv" as line
MERGE (n:Node{name:line.Source})
MERGE (m:Node{name:line.Target})
MERGE (n)-[:TO{distance:line.dist}]->(m)
I have a folder of csv files like this - "1232422.csv"
headers:
"ID","Name","ScreenName","location","Friends","Followers","Verified","Description","URL","Created_At"
there are 1500 files, with the filename having a "follows" relation with the rows of the csv file : (filename)-[follows]-(csv_row)
What is the best way to upload all of the data to my neo4j Graph?
Assuming that the import config settings are correct, you can pass the list of filenames (e.g., ["1232422", "1232423", ...]) as a filenames parameter to this query:
UNWIND $filenames AS filename
LOAD CSV WITH HEADERS FROM "file:///"+filename+".csv" AS data
CREATE (f:File {filename:filename})-[:FOLLOWS]->(r:Row)
SET r.csv_row = data
I am trying to add relationship between existing employee nodes in my sample database from csv file using the following commands:
USING PERIODIC COMMIT
LOAD CSV WITH HEADERS FROM
'file:///newmsg1.csv' AS line
WITH line
MATCH (e:Employee {mail: line.fromemail}), (b:Employee {mail: line.toemail})
CREATE (e)-[m:Message]->(b);
The problem i am facing is that, while there are only 71253 entries in the csv file in which each entry has a "fromemail" and "toemail",
I am getting "Created 240643 relationships, completed after 506170 ms." as the output. I am not able to understand what I am doing wrong. Kindly help me. Thanks in advance!
You can use MERGE to ensure uniqueness of relationships:
USING PERIODIC COMMIT
LOAD CSV WITH HEADERS FROM
'file:///newmsg1.csv' AS line
WITH line
MATCH (e:Employee {mail: line.fromemail}), (b:Employee {mail: line.toemail})
MERGE (e)-[m:Message]->(b);
Try change your create to CREATE UNIQUE:
USING PERIODIC COMMIT
LOAD CSV WITH HEADERS FROM
'file:///newmsg1.csv' AS line
WITH line
MATCH (e:Employee {mail: line.fromemail}), (b:Employee {mail: line.toemail})
CREATE UNIQUE (e)-[m:Message]->(b);
From the docs:
CREATE UNIQUE is in the middle of MATCH and CREATE — it will match
what it can, and create what is missing. CREATE UNIQUE will always
make the least change possible to the graph — if it can use parts of
the existing graph, it will.
I have installed neo4j and started with neo4jshell using neo4jShell start command.I have create a graph database and have to load data using .xls or .csv file format files. I am using the below command in the neo4jshell,
LOAD CSV WITH HEADERS FROM "file:RT_RISK.csv" AS ROW
CREATE (:Rt_Risk{risk_id:row.Risk_id,owner:row.owner,
risk_category: row.Risk_Category, description:row.Description} );"
But getting the below error "QueryExecutionKernelException: row not defined".
Kindly Suggest.
You're defining an capital variable in the first line AS ROW but use it in lower case letters in l. 2 and 3 row.
Identifiers are case sensitive.