Imporing data manually with GUI MongoDB causes ReferenceError: collection is not defined?

Question

当我尝试聚合以加入两个集合时，我在现有集合上收到此错误

show dbs

Bankerise 172 kB admin 102 kB config 73.7 kB local 73.7 kB

use Bankerise

switched to db Bankerise

show collections

usedData UserApp


db.usedData.aggregate( [    { 
     $lookup : {
                 from: UserApp,
                localField:"id",
                   foreignField: "id", as:"same_id"       
                }   
     }])

ReferenceError: UserApp is not defined

我认为这是因为我使用 GUI 手动导入了数据。

我在这里遗漏了什么？

Answer 1

正如 prasad_ 先生在评论中所写，这是一个语法错误，它被遗漏了 " " on UserApp

Imporing data manually with GUI MongoDB causes ReferenceError: collection is not defined?

Imporing data manually with GUI MongoDB causes ReferenceError: collection is not defined?

mongodb

mongodb-compass