SQLite Query Not Returning Expected Results with JOINs and GROUP BY
I've spent hours debugging this and I tried several approaches but none seem to work... I'm facing an issue with a complex SQLite query that involves multiple `JOIN`s and a `GROUP BY` clause. My goal is to aggregate data from two tables, `orders` and `customers`, to find out how many orders each customer has made. However, I'm getting unexpected results where some customers are not showing up in the output even when they have orders. Here's the SQL query I'm using: ```sql SELECT c.customer_id, c.name, COUNT(o.order_id) AS order_count FROM customers c LEFT JOIN orders o ON c.customer_id = o.customer_id GROUP BY c.customer_id; ``` The `customers` table has the following structure: ```sql CREATE TABLE customers ( customer_id INTEGER PRIMARY KEY, name TEXT NOT NULL ); ``` And the `orders` table looks like this: ```sql CREATE TABLE orders ( order_id INTEGER PRIMARY KEY, customer_id INTEGER, amount REAL NOT NULL, FOREIGN KEY (customer_id) REFERENCES customers(customer_id) ); ``` I've confirmed that there are customers in the `customers` table who do not have any corresponding entries in the `orders` table, and I expect them to show up with an `order_count` of 0 because of the `LEFT JOIN`. Instead, they are completely missing from the results. I also tried switching to an `INNER JOIN` to see if it would yield different results, but I ended up with fewer customers in the result, which is expected since it only returns matches from both tables. I have verified that the data types for the `customer_id` column in both tables match, so that's not the issue. Is there a specific configuration or version of SQLite that could cause this behavior? I'm currently using SQLite version 3.35.5. Any help would be appreciated! I've been using Sql for about a year now. I'm open to any suggestions. I'm working in a macOS environment.