arrays - 当 Cypher 中的元素大于零时，如何计算数组的元素？

Question

当 Cypher 中的元素大于零时，如何计算数组的元素？

With [12,-9,30,-5,4]

作为一个结果我会 3，我该怎么办？

标签： arraysgraphneo4jcountcypher

Answer 1

像这样的东西......

WITH [12,-9,30,-5,4] AS coll
RETURN filter(x IN coll WHERE x > 0) AS pos

如果你想要正数的实际数量

WITH [12,-9,30,-5,4] AS coll
RETURN size(filter(x IN coll WHERE x > 0)) AS pos

正如@christophewillemsen 所说

WITH [12,-9,30,-5,4] AS coll
RETURN size([x IN coll WHERE x > 0]) AS pos