[{"_id":ObjectId("624057512a4c11d61e4a8226"),"user":"Ashutosh","password":12345,"email":"seulij@sids.conm","__v":0},{"_id":ObjectId("62407c03f1c4d198344907a7"),"user":"wertgsdfbsrthfx","password":1234345,"email":"gfsdf@sdfg.com","__v":0},{"_id":ObjectId("62407c1ff1c4d198344907a9"),"user":"","password":null,"email":"","__v":0}]

db.collection.find({"user":"Ashutosh"},{user:1,_id:0})