Mongodb聚合框架中是否有地板功能?

本文介绍了Mongodb聚合框架中是否有地板功能?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我尝试在 mongodb 中进行一些整数数学运算，但遇到了一些问题.有没有办法在 mongo db 聚合框架中向上或向下舍入双精度数?

I try to do some integer math in mongodb and have some problems. Is there a way to round doubles up or down in the mongo db aggregation framework?

推荐答案

根据 Stennie 的评论，不支持 floor 和 ceiling 方法.

As per the comment from Stennie, the floor and ceiling methods are not supported.

根据我上面的评论，我能找到的最佳解决方案就是执行如下所示的操作: (num-mod(num,1)) 应该产生与 floor 函数相同的结果.

And as per my comment above, the best solution that I could find was just doing an operation that looks like: (num-mod(num,1)) which should yield the same result as the floor function.