Firebase and select distinct

Question

My data in firebase looks like

Can I do a select distinct on the Genre node using the REST API of firebase?

Answer 1

When you read a tree in Firebase, you get all the children. There's no way around this.

You can however, create a data structure that holds just the genres per movie.

{
   "movieGenres": {
      "3646": {
        "0": "Comedy"
      },
      "3647": {
        "0": "Drama"
      },
      "3648": {
        "0": "Horror",
        "1": "Sci-Fi"
      }
   }
}

Now getting the genres is a simple read.