json - MongoDB find().count() - SyntaxError: missing : after property id (shell):1 -

have .json data-supplied collection of tweets..

looking count delete-requests in sessions:

db.tweets.find({"delete"}).count() 

and syntax incorrect because syntaxerror: missing : after property id (shell):1

have more find() , count() operations perform, error consistent.

this delete-request looks (where "…" either series of letters and/or numbers):

{     "_id" : objectid("…"),     "delete" : {         "status" : {             "id" : numberlong("…"),             "user_id" : …,             "id_str" : "…",             "user_id_str" : "…"         }     } } 

in find() function have pass object. missed key/value, because {"delete"} isn't valid object.

i think want number of documents have delete key. have use $exists operator true value.

db.tweets.find({ "delete": { $exists: true } }).count(); 

or directly

db.tweets.count({ "delete": { $exists: true } }); 

from documentation:

$exists selects documents contain field if true. if false, query returns documents not contain field. documents contain field has value null not returned.