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SQLite query with multiple LEFT JOINs not returning expected rows

👀 Views: 29 💬 Answers: 1 📅 Created: 2025-06-08
sqlite sql join SQL

I'm converting an old project and I'm relatively new to this, so bear with me. I'm relatively new to this, so bear with me. I'm working on an SQLite database for a small application, and I've run into an issue with a query that uses multiple `LEFT JOIN`s. I expect the result to include all records from the `users` table, along with any relevant data from the `orders` and `payments` tables. However, I'm getting unexpected results where some users with no orders or payments are being omitted entirely. Here's the query I'm using: ```sql SELECT u.id, u.username, o.order_id, p.payment_id FROM users u LEFT JOIN orders o ON u.id = o.user_id LEFT JOIN payments p ON u.id = p.user_id; ``` In this case, I have users who have never placed an order and also haven't made any payments. I expect the rows for these users to appear with `NULL` values for both `order_id` and `payment_id`. However, the query results show only users who have at least one order or payment, effectively filtering out the users without any related data. I verified that the tables are set up correctly, and I have data in both the `orders` and `payments` tables, but the users without associations are not showing up at all. Could this be a quirk of how SQLite handles `LEFT JOIN`s, or am I missing something in the query logic? I’ve also tried running the query with only one `LEFT JOIN` at a time, and both joins work correctly in isolation, returning the expected `NULL` values when there are no matches. Could someone help clarify why I'm not seeing the expected results with multiple `LEFT JOIN`s? Any suggestions for troubleshooting or alternative approaches would be appreciated! Am I missing something obvious? I'm using Sql latest in this project.