MySQL query with GROUP BY and HAVING clause not filtering as expected when using aggregated functions
I need some guidance on I am trying to filter records using a `GROUP BY` clause in MySQL, but it seems that the `HAVING` clause isn't applying the filter correctly when I include an aggregated function. I'm using MySQL version 8.0.23 and aiming to find the total sales for each product category, but I want to exclude categories with sales below a certain threshold. Here’s my query: ```sql SELECT category, SUM(sales) AS total_sales FROM products GROUP BY category HAVING total_sales > 1000; ``` However, I'm getting results that include categories with `total_sales` less than 1000, which is confusing. I’ve also tried using an explicit filter in the `WHERE` clause, but that didn't seem to work either: ```sql SELECT category, SUM(sales) AS total_sales FROM products WHERE SUM(sales) > 1000 GROUP BY category; ``` This gives me an behavior because `SUM(sales)` isn't valid in the `WHERE` clause. I have checked if there are any NULL values in my `sales` column, but they seem to be handled properly. Any insights on why the `HAVING` clause isn't filtering as intended? Am I missing something in the logic or syntax? My development environment is Ubuntu 20.04.