MySQL 8.0: Issues with using `ROW_NUMBER()` in a nested query for pagination leading to unexpected results
I've tried everything I can think of but I'm trying to implement pagination for my API using MySQL 8.0, and I've opted to use the `ROW_NUMBER()` window function to achieve this. Here's the query I've constructed: ```sql WITH RankedProducts AS ( SELECT p.id, p.name, ROW_NUMBER() OVER (ORDER BY p.created_at DESC) AS row_num FROM products p WHERE p.status = 'active' ) SELECT * FROM RankedProducts WHERE row_num BETWEEN 11 AND 20; ``` However, I'm getting results where the `row_num` values are not what I expected. For instance, I'm seeing duplicate `id`s in the result set, which shouldn't happen given that `ROW_NUMBER()` should yield unique values for each row. I've confirmed that the `id` field is unique and there are no duplicate records in the `products` table. Additionally, when I run the query without the `WHERE row_num BETWEEN 11 AND 20`, I see that `row_num` starts at 1 as expected, but there are some entries with the same `row_num` value. I've also tried moving the WHERE clause into the CTE like this: ```sql WITH RankedProducts AS ( SELECT p.id, p.name, ROW_NUMBER() OVER (ORDER BY p.created_at DESC) AS row_num FROM products p WHERE p.status = 'active' ) SELECT * FROM RankedProducts WHERE row_num <= 20; ``` This resulted in the same unexpected behavior. I’ve also made sure that there are no issues related to the `ORDER BY` clause within the `ROW_NUMBER()` function. Has anyone encountered similar issues while using `ROW_NUMBER()` for pagination, or could there be something I’m missing here? The stack includes Sql and several other technologies.