mongodb - MONGO DB Alias name usage in find query not working -

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i using below command find records in contacts collection's 

db.contacts.find({"field1":"1"})

the problem want use alias name field1 sl.no

i tried way , not working...

db.contacts.find({"field :n, as: :sl.no" : "1"}

can anyne me in issue?

btw using mongo 1.6.5

some drivers mongoose support feature, there no such feature in mongodb or mongo shell.


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