Gremlin python MergeV update properties
I'm working with gremlin python 3.7.1 and AWS Neptune 1.3.2.1, and I'm trying to update vertex properties with MergeV().option(OnMatch, {...}), however the behavior isn't what I expect, it should be a=b but appears to be a=[c.b] where c is the old value. Someone knows how to implement correctly this behavior with MergeV?
Solution
If I'm understanding your question correctly, I think what you are seeing is a result of Neptune defaulting to
If you want to use mergeV and enforce single cardinality for properties (overwrite existing values instead of appending), you can try a query like this:
setproperty("name", "Alice")property("name", "Bob")vertex.name = {"Alice", "Bob"}If you want to use mergeV and enforce single cardinality for properties (overwrite existing values instead of appending), you can try a query like this:
Apache TinkerPop is an open source graph computing framework and the home of the Gremlin graph query language.
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