Neo4j

mv59_grid · 01-24-2023

Hello there, I am executing queries which seems to behave weird.The queries i am executing is this one : MATCH(nodea0:HypoComplexe:DOPLER:Maquette:ImportXML{id:'62c6df857aeb04026be826069df0faa67236a7d7d10a6b848fc66acf4b7ab7ab'}) CALL apoc.periodic...

mv59_grid · 12-21-2022

Hello, According to @glilienfield in this post UNWIND with inline variable, what am i doing wrong? i went using apoc.create.iterate to import approx 100MB of xmlFiles. It will generate 205000 nodes (8 different node labels) and 335542 relations (4 d...

mv59_grid · 12-20-2022

Hello everybody, I am Julien and i work for the french Transport System Operator (RTE : https://www.rte-france.com/en/about-rte ). My company is in charge of high and ultra-high-voltage lines spanning the whole of France and 50 interconnections with...

mv59_grid · 12-20-2022

Hello, I am generating factorized queries (i do a lot of similar queries in a short period of time). My code generates these kind of queries : Example 1 : WITH [ {"params1_createdTime":"1671525588177","params3_id":"b67dc350da753f4f8fb1cf4de0ff600da...

mv59_grid · 01-24-2023

Found the solution.WITH must conflicts with first return value. You must add matchchild in the second WITH clause.Working solution : MATCH(nodea0:HypoComplexe:DOPLER:Maquette:ImportXML{id:'633635e8a432b6c6f87f36b93df207491942bb7a0714a791725c70d6d0...

mv59_grid · 01-24-2023

I tried to modify the query -> MATCH(nodea0:HypoComplexe:DOPLER:Maquette:ImportXML{id:'633635e8a432b6c6f87f36b93df207491942bb7a0714a791725c70d6d070a5bc'}) CALL apoc.periodic.iterate( "WITH $matchchilds AS matchchilds UNWIND matchchilds as m...

mv59_grid · 12-21-2022

Hello Cédric, We can do that, when the things become more precise on my side.Actually, i am just testing the concept to see if we can take advantage of data graph structure for RTE use cases (performance and data access/visualisation).I was contacted...

mv59_grid · 12-20-2022

Now it works like a charm !Your help was precious. Thank you so much. Final query : CALL apoc.periodic.iterate( "WITH $data AS data UNWIND data as row RETURN row", "MERGE (nodea1:HypoComplexe:DOPLER:Maquette:ImportXML{id:row.params1_id}) ...

mv59_grid · 12-20-2022

Thank you. After struggling with CALL IN TRANSACTIONS, i came to the conclusion that this solution applies only to implicit queries. I believe it is not my use case but i may be wrong ? After that, i have gone to apoc. After a few nightmares : I have...

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Query seems to not execute properly. Is it an issue?

Merging data : Deadlocks and performance balance in a heavily connected graph

Electrical grid modeling with Neo4J? Let's do it !

UNWIND with inline variable, what am i doing wrong?

Re: Query seems to not execute properly. Is it an issue?

Re: Query seems to not execute properly. Is it an issue?

Re: Electrical grid modeling with Neo4J? Let's do it !

Re: UNWIND with inline variable, what am i doing wrong?

Re: UNWIND with inline variable, what am i doing wrong?