简单的Cypher查询百分比计算

Question

我有很多产品，想知道有多少百分比有效， 我是Cypher的新手并试图使用WITH keyword但没有成功：

MATCH (n:ratedItem) 
WHERE n.idCategory = "45" AND 
  n.isValidate = "1" AND 
  n.value_fr = 1 
WITH count(n) as totalValidate 
MATCH (n:ratedItem) 
WHERE n.idCategory = "45" 
WITH count(n) as total 
RETURN (totalValidate / total) * 100

我有语法错误，似乎Cypher不知道第一个计数totalValidate

感谢您的帮助

Answer 1

你已经忘记了第二个WITH：

MATCH (n:ratedItem) 
WHERE n.idCategory = "45" AND 
  n.isValidate = "1" AND 
  n.value_fr = 1 
WITH count(n) as totalValidate 
MATCH (n:ratedItem) 
WHERE n.idCategory = "45" 
WITH count(n) as total, totalValidate
RETURN (totalValidate / total) * 100