Re: [Neo4j] how to add new property to an existing relationship?

thanks a lot. On Wednesday, March 23, 2016 at 8:53:31 AM UTC+1, Michael Hunger wrote: > > MATCH (p:Product)-[r:inside]->(c:Category) > > SET r.type = p.id + '->' + c.id > > But I *strongly recommend against* setting this kind of property !! > > As you can always compute the information! > >

Re: [Neo4j] how to add new property to an existing relationship?

No, there are no constraints on rels. What's your use-case? Do you have an actual performance problem? Michael > Am 23.03.2016 um 09:49 schrieb kincheong lau : > > Thanks! I was thinking adding unique property and then create > index/constraint might improve

Re: [Neo4j] how to add new property to an existing relationship?

Thanks! I was thinking adding unique property and then create index/constraint might improve performance, would that be the case? On Wednesday, March 23, 2016 at 3:53:31 PM UTC+8, Michael Hunger wrote: > > MATCH (p:Product)-[r:inside]->(c:Category) > > SET r.type = p.id + '->' + c.id > > But

Re: [Neo4j] how to add new property to an existing relationship?

> MATCH (p:Product)-[r:inside]->(c:Category) SET r.type = p.id + '->' + c.id But I strongly recommend against setting this kind of property !! As you can always compute the information! > MATCH (p:Product)-[r:inside]->(c:Category) RETURN p.id + '->' + c.id MERGE always tries to find the