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I am trying to make a search function that queries user by their username from Firebase database, but I want my the function to only return the users with the exact username(letters) that is typed in to the search bar. so lets say if I type Mike into the search bar and tap search, I don't want it to return anything unless there is a user with this exact username(Mike).

I would really appreciate any help to improve my search function from you guys, thanks!

Here is my function:

 var REF_USERS = Database.database().reference().child("users") func searchQueryUsers(text: String, completion: @escaping (theUsers) -> Void) { REF_USERS.queryOrdered(byChild: "username").queryStarting(atValue: text).observeSingleEvent(of: .value, with: { snapshot in snapshot.children.forEach({ (sss) in let child = sss as! DataSnapshot if let dict = child.value as? [String: Any] { let user = theUsers.setUser(dict: dict, key: child.key) completion(user) } }) }) }
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Check this:

func searchQueryUsers(text: String, completion: @escaping (_ userNames: [String]) -> Void) { var userNames: [String] = [] REF_USERS.queryOrdered(byChild: "username").queryStarting(atValue: text).observeSingleEvent(of: .value, with: { snapshot in for item in snapshot.children { guard let item = item as? DataSnapshot else { break } //"name" is a key for name in FirebaseDatabese model if let dict = item.value as? [String: Any], let name = dict["name"] as? String { userNames.append(name) } } completion(userNames) }) }

As a result, you will have a list of names.

But if you need only 1 name, use:

let nameOfFirstUser: String = userNames.first

Why is it better to get the entire list of names?

In your database, for example, there may be such names: Mike, Michel ...

And if you enter "Mi" in the searchBar, both the first and the second name will match your search query.

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Thank you for your help Maxwell, I will try this out.