CODEWITHSUNDEEP
firebase-realtime-database
Minte Temple
Minte Temple

Reputation: 55

Retrieving data from two tables in firebase

I am trying to retrieve data from two tables in a database. I understand that if I want to read from a child I do this:

mDatabase = FirebaseDatabase.getInstance().getReference().child("Users");

So what do I do for two children?

My data looks like this:

Data example

Upvotes: 1

Views: 3174

Answers (1)

Raul Marques
Raul Marques

Reputation: 355

I'll assume 2 possibilities for your question.

First: you want to retrieve a child of a child

appName{
      "users" : {
        "Bob" : {
          "age" : 20
        }
}

In this case to access a specific user you should do:

mDatabase = FirebaseDatabase.getInstance().getReference().child("Users").child("Bob");

But if you mean that you have different child like: users and questions

appName{
  "users" : {
    "Bob" : {
      "age" : 20
    }
}

  "questions" : {
    "who am I?" 
    }
}

Then, you should make a reference to each one of them:

usersRef = FirebaseDatabase.getInstance().getReference().child("Users");
questionsRef = FirebaseDatabase.getInstance().getReference().child("questions");

Upvotes: 1

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