javascript - How to query based on multiple conditions in Firebase?

Question

I have this following structure:

{
  "users" : {
    "123" : {
      "activities" : {
        "horse" : "horse",
        "bike" : "bike"
      },
      "age" : 21
    },
    "124" : {
      "activities" : {
        "bike" : "bike"
      },
      "age" : 30
  }
}

I am trying to do something similar to:

SELECT * FROM users WHERE (activities = 'horse' OR activities = 'bike') AND age >= 21

Can I please get some pointers on this? If I didn't structured the data properly, can I also get some tips there?

edit: jsfiddle

Answer 1

Waitting for answers