`Count`

Cypher® COUNT 子查询可以使用 new Cypher.Count() 创建。为此，需要将有效的查询传递给 Count。

请注意，计数子查询也可以在 WHERE 子句中用作谓词。例如

const subquery = new Cypher.Match(new Cypher.Node({ labels: ["Movie"] })).return("*");

const countExpr = new Cypher.Count(subquery);
const match = new Cypher.Match(new Cypher.Node())
    .where(Cypher.gt(countExpr, new Cypher.Literal(10)))
    .return("*");

MATCH (this0)
WHERE COUNT {
    MATCH (this1:Movie)
    RETURN *
} > 10
RETURN *

简单的 `Count` 子查询

可以直接将 Pattern 而不是 Clause 传递给 Count 子查询

const countExpr = new Cypher.Count(new Cypher.Pattern(new Cypher.Node(), { labels: ["Movie"] }))

const match = new Cypher.Match(new Cypher.Node())
    .where(Cypher.gt(countExpr, new Cypher.Literal(10)))
    .return("*");

MATCH (this0)
WHERE COUNT {
    (this1:Movie)
} > 10
RETURN *

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