1

I have one collection and in that collection there is no primary key id but there is _id. how can i add one more field to the collection as primary key id

soubhagya
  • 788
  • 2
  • 12
  • 37
  • Can you clarify your question by updating it to show a specific example of what you're looking for? – JohnnyHK Nov 22 '18 at 15:16
  • Hi, the field _id into documents is de primary key per defect in MongoDB. If you need to update one or more documents you can use db.collection.update https://docs.mongodb.com/manual/reference/method/db.collection.update/#db.collection.update Only requires that you define a query to filter and define the json with new values. – Maxi Schvindt Nov 22 '18 at 21:40

1 Answers1

1

_id is the primary in mongodb. See also Difference between “id” and “_id” fields in MongoDB

smonkey
  • 195
  • 2
  • 7