mongoose - how to find data from mongodb collection in desending order? -


this question has answer here:

suppose collection named books in mongodb , data follows.here ignore _id. please provide simple query finding books database costly book's document comes first.

>{     "name":"a",     "cost":100  }  {     "name":"b",     "cost":1000  }  {     "name":"f",     "cost":400  }  {     "name":"e",     "cost":400  }  {     "name":"z",     "cost":800  }

my expected result be:

>{      "name":"b",      "cost":1000  }  {      "name":"z",      "cost":800  }  {      "name":"e",      "cost":400  }  {      "name":"f",      "cost":400  }  {      "name":"a",      "cost":100  }

try 

  db.books.find({},{"name":1,_id:0,"cost":1}).sort({"cost":-1})

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