相当于neo4j中的row_number [英] Equivalent of row_number in neo4j
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问题描述
我正在尝试运行一个查询,根据它们在查询中出现的顺序分配整数.我希望它发挥作用:
I'm trying to run a query where I assign integers based on the order they appeared in the query. I'd like it to work to the effect of:
MATCH users RETURN users ORDER BY created_at SET user.number=ROW_NUMBER()
有没有办法在单个查询中做到这一点?谢谢!
Is there a way to do this in a single query? Thanks!
推荐答案
你可以通过使用集合来实现:
You can do it by playing a bit with a collection :
MATCH (n:User)
WITH n
ORDER BY n.created_at
WITH collect(n) as users
UNWIND range(0, size(users)-1) as pos
SET (users[pos]).number = pos
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