Hi Joe,
did you
create index on :Printing(Name) ?
try to use:
> match (c:Card)
match (p:Printing {Name:c.Name})
>
> merge (p)-[:PRINTING_OF]->(c)
which should use index lookups to find the printing(s) for each card.
Cheers, Michael
> Am 30.04.2015 um 17:20 schrieb Joe DeCock <[email protected]>:
>
> Hi everyone, I'm new to Neo4j and this community. I have a question about
> Neo4j and I hope this is the right place to ask it.
>
> As an exercise, I've created a graph of about 50k nodes. I now realize that I
> should have modeled the data differently, so I've been trying to make bulk
> updates to the graph. In particular, I need to add a large number of
> relationships to my graph. I've been trying to do things like
>
> match (c:Card), (p:Printing {Name:c.Name})
> merge (p)-[:PRINTING_OF]->(c)
>
> But this seems wildly inefficient (there are tens of thousands of Cards and
> tens of thousands of printings). What I'm trying to express is, "'Join' cards
> with printings on their Name properties, and create relationships between the
> related nodes."
>
> Is there a better way?
>
> Thanks in advance,
> Joe
>
>
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