> db.find5.find()
{"_id" : "4a4d6db199b25e6fee7649f9" , "a" : 1 , "b" : {"c" : 2 , "d" : 3 , "e" : 4}}
> db.find5.find( {} ,
)
{"_id" : "4a4d6db199b25e6fee7649f9" , "b" : {"c" : 2}}
> db.find5.find( {} ,
)
{"_id" : "4a4d6db199b25e6fee7649f9" , "b" : {"c" : 2 , "d" : 3 , "e" : 4}}