MySQL subquery in WHERE clause giving 'Unknown column' scenarios on valid column names
After trying multiple solutions online, I still can't figure this out. I've looked through the documentation and I'm still confused about Quick question that's been bugging me - I'm working with an scenario with a MySQL query where I'm trying to filter records based on a subquery in the WHERE clause..... The behavior I'm getting is 'Unknown column' despite the fact that I'm sure the column names are correct. Here's the query I'm working with: ```sql SELECT p.id, p.name, p.price FROM products p WHERE p.category_id IN ( SELECT c.id FROM categories c WHERE c.active = 1 ); ``` In this case, the `products` table has a column `category_id`, and the `categories` table has columns `id` and `active`. I've double-checked that the `categories` table has rows with `active` set to 1, so the subquery should return valid IDs. However, I'm getting this behavior: ``` behavior 1054 (42S22): Unknown column 'c.id' in 'field list' ``` I've verified that both tables exist and that the column names are correct, but I still face this scenario. I've tried rewriting the subquery in different ways, such as using JOIN instead of IN, but that also raises the same behavior. I'm using MySQL 8.0.23, and I'm connecting to the database through a Laravel application. Has anyone experienced this kind of question before? Any insights or suggestions on how to resolve this would be greatly appreciated! This is part of a larger service I'm building. I'm working on a service that needs to handle this. What's the best practice here? I'm working in a Debian environment. Is there a better approach?