Neo4j

Percedal · 01-13-2020

Hello! I have graphs consisting of student nodes and classmate relationships (s1)-[:classmate]->(s2). Is it possible to write a query that cuts off relations between fake classmates? For example, here it is necessary to cut off the Donskoy Ilya.

Percedal · 01-11-2020

Hello! I have a database with student, subjects, auditoriums and relationships: a) () -> [: study] -> () the student is studying the subject b) () -> [: visit {timestamp}] -> () the student visits the auditorium at the specified time. I want to say t...

Percedal · 01-16-2020

This code seems to have helped me. MATCH (a:student)-[rel:classmate]->(b:student) WITH size((b)-[:classmate]->() ) AS others_classmates, size((a)-[:classmate]->() ) AS own_classmates, a, b, rel WHERE others_classmates >= own_classmates DELETE rel

Percedal · 01-14-2020

Yes, but Donskoy is not a classmate for the rest of the students in the group: Vasilchenko, Tyschenko, Polikutin.

Percedal · 01-14-2020

I want like this

Percedal · 01-13-2020

Hi. I have an error: Variable rel not defined (line 5, column 8 (offset: 196)) "DELETE rel".

Percedal · 01-13-2020

The code works correctly. But (no changes, no records).

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Cut off unnecessary relationships

Create the relationship based on condition

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