What are some examples of queries I can run on Firebase Database?

What are some examples of queries I can run on Firebase Database?

You can run various queries like retrieving all users, filtering by age, or sorting data. What specific example do you need?

Can you show me how to retrieve all users from the database?

Sure! You can use the following code: firebase.database().ref('users').once('value').then(snapshot => { console.log(snapshot.val()); }); This retrieves all users.

How do I filter users by age?

To filter users by age, you can use a query like this: firebase.database().ref('users').orderByChild('age').equalTo(25).once('value').then(snapshot => { console.log(snapshot.val()); }); This gets users who are 25 years old.

What about sorting users by their names?

You can sort users by name using: firebase.database().ref('users').orderByChild('name').once('value').then(snapshot => { console.log(snapshot.val()); }); This will return users sorted by their names.