Querying with @Query
Fetch and sort persisted data in views.
Querying with @Query is a free SwiftUI Academy lesson on CoddyKit — lesson 3 of 4. You can read the complete lesson below for free — then practise it hands-on in the browser with a built-in code editor and a 24/7 AI tutor. It is part of the SwiftUI Academy learning path, one of 4 lessons in the course, and your progress syncs across the web and the CoddyKit app.
Fetching Saved Data
To show stored records in a view, you fetch them with @Query. It reads from your container and keeps the view fresh. 🔍
The @Query Property
Declare an array property with @Query and SwiftData fills it with every matching record. No manual loading needed.
@Query private var tasks: [Task]Showing Results in a List
Pair @Query with a List to render rows from your data. Each saved object becomes one line on screen.
List(tasks) { task in
Text(task.title)
}Live Updates
A @Query view updates by itself when data changes. Insert a record and the list redraws with no extra work.
Sorting Results
Pass a sort key path to order your results. Here tasks come back alphabetically by title every time.
@Query(sort: \.title) var tasks: [Task]Sort Direction
Add order to sort ascending or descending. Newest-first lists feel natural for things like recent notes.
@Query(sort: \.due, order: .reverse)
var tasks: [Task]Filtering with Predicates
A #Predicate narrows results to records that match a rule. Only the rows you care about reach the view.
#Predicate<Task> { $0.isDone == false }Applying a Filter
Pass your predicate to @Query to fetch a filtered set. This view shows only the tasks still left to do.
@Query(filter: #Predicate<Task> {
!$0.isDone })
var open: [Task]Multiple Sort Keys
Give an array of SortDescriptor values to sort by more than one field. Tie-breaks make long lists feel ordered.
@Query(sort: [SortDescriptor(\.priority)])
var tasks: [Task]Counting and Empty States
Check the array's isEmpty to show a friendly placeholder. A clear empty state guides new users gently.
if tasks.isEmpty {
Text("No tasks yet")
}Queries Stay in Sync
Because @Query watches the store, your UI never drifts from the data. Save once and every query reflects it.
Quick Check
Quick check on querying data.
Recap: Querying
You used @Query to fetch, sort, and filter saved data, and watched the view stay live. Reading from SwiftData is now second nature. 🎯
Frequently asked questions
Is the “Querying with @Query” lesson free?
Yes — the full text of “Querying with @Query” is free to read here on the web, and the SwiftUI Academy course includes 4 lessons in total. To practise it interactively (a built-in code editor and a 24/7 AI tutor) and unlock the rest of the SwiftUI Academy course, upgrade to CoddyKit PRO.
What will I learn in “Querying with @Query”?
Fetch and sort persisted data in views. You practise SwiftUI Academy with hands-on code you run directly in the browser, and a 24/7 AI tutor answers your questions as you work through the lesson.
Do I need any experience to start SwiftUI Academy?
No prior experience is required. SwiftUI Academy on CoddyKit is structured for beginners through advanced learners; this is — lesson 3 of 4, so you can start here or from the beginning and move at your own pace.
How long does the “Querying with @Query” lesson take?
Most CoddyKit lessons take about 5–10 minutes. Each one is bite-sized and interactive, so you make steady progress and pick up exactly where you left off across the web and the app.
Can I write and run code in this SwiftUI Academy lesson?
Yes. Every SwiftUI Academy lesson includes a built-in code editor, so you write and run real code right in your browser and get instant AI feedback — no local setup required.
All lessons in this course
- Defining @Model Types
- The Model Container & Context
- Querying with @Query
- Inserting, Updating & Deleting