我可以在唯一性约束中指定多个标签吗？ [英] Can I specify multiple labels in a uniqueness contraint?

问题描述

我将尝试使用两个标签在图表中的对象上创建唯一性约束，并且我想知道我是否可以期望它能够正常工作。

I am going to experiment with creating a uniqueness constraint on objects in my graph with two labels and am wondering if I can expect it to work.

我想要做这样的事情...

I want to do something like this...

CREATE CONSTRAINT ON (n:Object:Sub_graph_A) ASSERT n.name is unique;

CREATE CONSTRAINT ON (n:Object:Sub_graph_B) ASSERT n.name is unique;

同一个对象可以在整个图表中以相同名称存在，但在特定子图标中必须是唯一的-图形。

The same object can exist with the same name in the overall graph but must be unique in a particular sub-graph.

关于这是否是个好主意的任何想法？我应该知道我的技术成功是否足够快。我只是不确定这种方法是否合理（即我是否在Neo4j的设计能力范围内运行）。

Any thoughts on whether this is a good idea or not? I should know whether I am technically successful soon enough. I am just not sure if the approach is sound (i.e. am I operating within the design capabilities of Neo4j).

推荐答案

不幸的是目前只有一个标签和一个属性，我们计划稍后进行扩展。

No unfortunately currently there is only one label and one property, we plan to extend that later.

如果您希望它对两个标签都是唯一的，您可以创建两个约束每个标签。但那不是解决你的用例。我将从您的约束中删除：Object ，而是在上添加索引：对象（名称）

If you want it to be unique for both labels, you might create two constraints one for each label. But that's not addressing your use-case. I'd remove :Object from your constraint and instead add an index on :Object(name)

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