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修正错别字 #23

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Jan 20, 2019
Merged

修正错别字 #23

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2 changes: 1 addition & 1 deletion ch2.md
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Expand Up @@ -591,7 +591,7 @@ CREATE INDEX edges_heads ON edges (head_vertex);

### Cypher查询语言

Cypher是属性图的声明式查询语言，为Neo4j图形数据库而发明【37】。（它是以电影“黑客帝国”中的一个角色开命名的，而与密码术中的密码无关【38】。）
Cypher是属性图的声明式查询语言，为Neo4j图形数据库而发明【37】。（它是以电影“黑客帝国”中的一个角色来命名的，而与密码术中的密码无关【38】。）

[例2-3]()显示了将[图2-5](img/fig2-5.png)的左边部分插入图形数据库的Cypher查询。可以类似地添加图的其余部分，为了便于阅读而省略。每个顶点都有一个像`USA`或`Idaho`这样的符号名称，查询的其他部分可以使用这些名称在顶点之间创建边，使用箭头符号：`（Idaho） - [：WITHIN] ->（USA）`创建一条标记为`WITHIN`的边，`Idaho`为尾节点，`USA`为头节点。

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