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                            對銀行賬戶文檔進行排序
~~~
db.accounts.aggregate([
 {
     $sort:{
         balacne:1,"name.lastName":-1
}
 }
 ])
~~~
返回內容
```
{ "_id" : ObjectId("60d2cb85c9b0d831c97763eb"), "name" : { "firstName" : "bob", "lastName" : "yang" }, "balance" : 20 }

{ "_id" : ObjectId("60d2cb85c9b0d831c97763ea"), "name" : { "firstName" : "alice", "lastName" : "wong" }, "balance" : 50 }
```

                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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