$ UnionWith管道过滤器

发布于 2025-02-07 13:43:03 字数 510 浏览 1 评论 0 原文

我正在尝试使用聚合管道上的$ UNIOMWITH执行类似的操作：

ParentObject

db.getCollection("col").aggregate(
[
   //Filtering the master
   {$match:{'_id':ObjectId('62722c260ee18a304784d8cf')}},
   //then we want to bring all data which holds the same type
   {$unionWith: { coll: "col", pipeline: [{$match:{'Type':"$Type"}}]}}
])

基本上我想返回带有'62722C260EE18A304784784D8CF'对象的列表和所有其他拥有“类型”属性的对象...

就我而言，就我而言 ...可以看到，看来这是不可能的，还是我错过了什么？

基本上，“ $ type”无法解决...

预先感谢！

PCBL

原文

I am trying to use the $UnionWith on my aggregation pipeline to do something like this:

ParentObject

db.getCollection("col").aggregate(
[
   //Filtering the master
   {$match:{'_id':ObjectId('62722c260ee18a304784d8cf')}},
   //then we want to bring all data which holds the same type
   {$unionWith: { coll: "col", pipeline: [{$match:{'Type':"$Type"}}]}}
])

Basically I want to return a list with the '62722c260ee18a304784d8cf' object and all other objects that holds the 'Type' property...

As far as I could see, it seems this would not be possible, or am I missing something?

Basically the "$Type" does not get resolved...

Thanks in advance!

PCBL

分享到QQ

分享到微博