Query entity from nodes in NebulaGraph

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I’m trying to query a NebulaGraph.

I created different nodes with, each of which having their own properties. I know I can query for a specific node, but I want to query for only a specific entity inside a selected node.

For example, I have a "People" node that store name, relation, interaction... I want to query People.Name.

But I can't find how.

I tried to create a new Tag index using

CREATE TAG INDEX people_name_index ON People(Name);

But it returns Invalid param.

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