cypher查询

1. 根据节点id查询，两种方式：

• start n = node(77437402) return n
• match (e:ent) where id(e)=77437402 return e

2. 查询包含某个字符的节点或关系
   match (e:ent)-[r:hold5..]->() where e.name=~".集团.*" return e limit 500
3. in
   match (n) where id(n) IN[111,22,34] return n
4. 是否存在属性
   match (n) where exists(n.entname) return n
5. start with和end with
   match (n) where n.name starts with ‘北京’ return n
6. 包含
   match (n) where n.entname contains ‘北京’ return n limit 200