使用 UNWIND 时数据丢失

Question

MATCH (ORG:ORG)-[ORGHASPROBLEM:HAS]->(PROBLEM:PROBLEM) WITH PROBLEM,

extract(NUM IN filter( V IN collect({ PROB1:PROBLEM.PROB_ID, PROB2:PROBLEM.REGION}) where V.PROB2= 'LONDON') | NUM.PROB1) AS MEASURES1,

extract(NUM IN filter( V IN collect({ PROB1:PROBLEM.PROB_ID, PROB2:PROBLEM.REGION}) where V.PROB2= 'PARIS') | NUM.PROB1) AS MEASURES2

unwind MEASURES1 AS RESULT1
unwind MEASURES2 AS RESULT2

RETURN DISTINCT PROBLEM.SLAB AS DIMENSION,count(RESULT1) AS  MEASURES1,count(RESULT2) AS MEASURES2

我正在上传数据库的图像和预期的输出。谁能重写查询或告诉我哪里出错了？

我的问题是 MEASURES1 和 MEASURES2 有我需要的数据。当我使用 unwind MEASURES1 AS RESULT1 时，它会根据需要提供输出，但是在第二次 unwind (unwind MEASURES2 AS RESULT2) 的情况下，它会从 MEASURES1 和 MEASURES2 中删除整个数据.

请查看附图以更清楚地了解场景。

Answer 1

下面的查询将以允许您构建报告的方式从数据库中获取数据。作为奖励，如果您添加一个新区域，它也将起作用：

MATCH (p:PROBLEM)
WITH count(*) AS ct, p.REGION AS pregion, p.SLAB AS slab
RETURN slab, collect({region: pregion,  count: ct}) as result;

希望对您有所帮助。

此致，汤姆

使用 UNWIND 时数据丢失

Data is loss when I use the UNWIND

database

neo4j

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neo4j-ogm