I have mongo collection like below

{
  "auther" : "xyz" , 
  "location" : "zzz" , 
  "books" : 
    [
      {"book1" : "b1" , "date" : 2-3-00} ,
      {"book1" : "b2" , "date" : 4-9-00}
    ]
}

{
  "auther" : "pqr",
  "location" : "zzz" , 
  "books" : 
    [
      {"book1" : "b1" , "date" : 2-4-00}
    ]
}

I want to get the only the date of book b1 and author xyz .

i have make query like below

db.coll.find({"auther" : "xyz" , "books.book1" : "b1"} , {"books.date" : 1})

but it's gives output as follows

"books" : {"date" : 2-4-00} , "books" : {"date" : 4-9-00}

I want to get the only the date of book b1 and other xyz .means only "books" : {"date" : 2-4-00}

is it possible in mongo or am I doing something wrong?

arrays mongodb
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