Search icon CANCEL
Subscription
0
Cart icon
Your Cart (0 item)
Close icon
You have no products in your basket yet
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
Building Production-Grade Web Applications with Supabase

You're reading from   Building Production-Grade Web Applications with Supabase A comprehensive guide to database design, security, real-time data, storage, multi-tenancy, and more

Arrow left icon
Product type Paperback
Published in Aug 2024
Publisher Packt
ISBN-13 9781837630684
Length 534 pages
Edition 1st Edition
Languages
Tools
Arrow right icon
Author (1):
Arrow left icon
David Lorenz David Lorenz
Author Profile Icon David Lorenz
David Lorenz
Arrow right icon
View More author details
Toc

Table of Contents (20) Chapters Close

Preface 1. Part 1:Creating the Foundations of the Ticket System App FREE CHAPTER
2. Chapter 1: Unveiling the Inner Workings of Supabase and Introducing the Book’s Project 3. Chapter 2: Setting Up Supabase with Next.js 4. Chapter 3: Creating the Ticket Management Pages, Layout, and Components 5. Part 2: Adding Multi-Tenancy and Learning RLS
6. Chapter 4: Adding Authentication and Application Protection 7. Chapter 5: Crafting Multi-Tenancy through Database and App Design 8. Chapter 6: Enforcing Tenant Permissions with RLS and Handling Tenant Domains 9. Chapter 7: Adding Tenant-Based Signups, including Google Login 10. Part 3: Managing Tickets and Interactions
11. Chapter 8: Implementing Dynamic Ticket Management 12. Chapter 9: Creating a User List with RPCs and Setting Ticket Assignees 13. Chapter 10: Enhancing Interactivity with Realtime Comments 14. Chapter 11: Adding, Securing, and Serving File Uploads with Supabase Storage 15. Part 4: Diving Deeper into Security and Advanced Features
16. Chapter 12: Avoiding Unwanted Data Manipulation and Undisclosed Exposures 17. Chapter 13: Adding Supabase Superpowers and Reviewing Production Hardening Tips 18. Index 19. Other Books You May Enjoy

Working with complex table joins

We’ve learned about joining related tables by using nested select strings (for example, fetching related comments in tickets), but with Supabase, you can do the following:

  • Resolve ambiguous joins, to avoid errors, explicitly
  • Rename joined tables on the fly
  • Create inner joins to only return data where related data exists
  • Combine the renaming feature with the inner join feature

Let me show you a few practical examples.

In our tickets table, we have two user references: created_by -> public.service_users and assignee -> public.service_users. I want to retrieve both user objects with a join. We do so by nesting the related table like so:

supabase.from("tickets").select("*, service_users(*)");

This will fail – since there are two pointers pointing to service_users, it will not know which one to resolve.

However, you can also resolve this another way, by declaring two explicit joins...

lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at $19.99/month. Cancel anytime
Banner background image