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09-26-2018 05:36 AM
Is it possible to order and filter by relation in neo4j ? for example :
I have gardien and kid with relations (father,mother,brother, sister) and I want to list gardiens and kids with their relationships with this type of filter:
if the gardien is the father of the kid:
then return (father, kid)
else if the kid doesn't have the father :
then return his (mother, kid)
else if the kid doesn't have the father or mother:
then return his (brother, kid)
otherwise :
return his (sister, kid)
How can do a request like this with cypher ?
Thank you in advance,
09-26-2018 05:38 AM
Yes, you can do all of this. I can't show you what the cypher would look like because you need a data model for that, but I can point you in the right direction.
You can use the OPTIONAL MATCH
in cypher to assert that a pattern may or may not exist. So for example something like matching a child node, and then creating an OPTIONAL MATCH to a father or a mother.
You can use CASE ... WHEN expressions in cypher to do the if/then/else part of your query.
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