aggregation-framework

英文: How to get sum of specific number of nested objects in an array sorted by date with aggregation ...

英文: MongoDB aggregate $match stage with conditional query 问题 我想在MongoDB聚合中进行匹配阶段，在此匹配中，我想检查是否存在条件，使用...

英文: Auto conversion of foreign key from string to ObjectId to make $lookup aggregation work by Mongo...

英文: Using a collection's aggregation pipeline with all records of another collection 问题 你有两个集合： ...

英文: How to get the correct percentage from array of objects with aggregation pipeline 问题 I have tran...

英文: Identify records in a.d that do not have corresponding record in a.p in nested array 问题 I can pr...

英文: populate array of ids from same same collection 问题 以下是您要翻译的内容： 我有一组产品，其中我将变体保存为ID数组，但这些ID数组是来自同一...

英文: How to lookup a specific field of every object of an array using mongodb aggregation 问题 我试图查找ren...

英文: How to ensure that $sort push missing values to the bottom regardless of ascending or descending...

英文: how to filter using MongoDb Aggregate when searching string 问题 我想在类型为String的文件fileName上进行搜索。 { _...