How to create unique items in RethinkDB

Question

How to create unique items in RethinkDB?

In MongoDb I used ensureIndex for this, eg:

userCollection.ensureIndex({email:1},{unique:true},function(err, indexName){

Answer 1

RethinkDB does not currently support uniqueness constraints on fields other than the primary key.

You could use an auxiliary table where the unique field is stored as the primary key in order to check for uniqueness in your application explicitly.