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Miscellaneous Query Operators其他查询运算符

Note

For details on a specific operator, including syntax and examples, click on the link to the operator's reference page.有关特定运算符的详细信息，包括语法和示例，请单击该运算符参考页的链接。

Name名称Description描述
$commentAdds a comment to a query predicate.向查询谓词添加注释。
$randGenerates a random float between 0 and 1.生成0和1之间的随机浮动。
$naturalA special hint that can be provided via the sort() or hint() methods that can be used to force either a forward or reverse collection scan.可以通过sort()或hint()方法提供的一个特殊提示，可用于强制进行正向或反向集合扫描。