使用 Cypher 将字符串数组导入到从 csv 到 Neo4j 的整数

Question

我是 Neo4j 和 Cypher 的新手，我正在尝试从 csv 导入一些包含 ID 数组的数据。我有下面的查询，但由于 Cypher 默认为字符串，我一直无法找到将 placeID 数组转换为整数的最佳方法。

LOAD CSV WITH HEADERS FROM 'http://localhost:11001/project-ca45d786-e360-4e3b-b4b4-eb8fe62a7b55/People-Gridv2.csv' AS row
CREATE (:People {peopleID: toInteger(row.peopleID), nickname: row.nickname, firstName: row.firstName, lastName: row.lastName, relationship: row.relationship, firstMemory: row.firstMemory, lastMemory: row.lastMemory, placeID: split(row.placeID,";")})

我希望我能够执行以下操作，但它不起作用：

placeID: toInteger(split(row.placeID,";"))

谁能指出我正确的方向？

Answer 1

大概是这样的

placeID : REDUCE(array=[] , s IN split(row.placeID,";") | array+[toInteger(s)] )

获取整数数组

例子

with '123;456' as placeID
return REDUCE(array=[] , s IN split(placeID,";") | array+[toInteger(s)] )

会回来

[123,456]

甚至更短:)

with '123;456' as placeID
return [s IN split(placeID,";") | toInteger(s)]