Mongoimport csv files with string _id and upsert

Question

I\'m trying to use mongoimport to upsert data with string values in _id. Since the ids look like integers (even though they\'re in quotes), mongoimport treats them as intege

Answer 1

As an alternative to @Jesse, you can do something similar in the mongo console, e.g.

db.my_collection.find().forEach(function (obj) {
  db.my_collection.remove({_id: obj._id); // remove the old one
  obj._id = '' + obj._id; // change to string
  db.my_collection.save(obj); // resave
});

For non _id fields you can simply do:

db.my_collection.find().forEach(function (obj) {
  obj.someField = '' + obj.someField; // change to string
  db.my_collection.save(obj); // resave
});