Directing how to return a number of key data and access to a collection of key value (don't)
Trouble you to give directions

CodePudding user response:

Dict. Keys ()
List to return a dictionary all the keys

CodePudding user response:

Sent you a wrong, sorry

CodePudding user response:

Refer to others:
Mr=db. RunCommand ({
"Graphs", "my_collection",
"A map" : the function () {
For (var key in this) {emit (key, null); }
},
"Reduce" : function (key, stuff) {return null; },
"Out" : "my_collection" + "_keys
"})