SQL Server: Difficulty with Filtering on Aggregated Data in a CTE
I've hit a wall trying to Can someone help me understand I've searched everywhere and can't find a clear answer... I'm running into an issue when trying to filter data from a Common Table Expression (CTE) after aggregating it. The goal is to get the total sales per product category and then filter out categories that have sales below a certain threshold. However, when I use the `HAVING` clause to filter the aggregated results, it seems like the query is not returning the expected results. Here’s the SQL code I’m using: ```sql WITH CategorySales AS ( SELECT c.CategoryName, SUM(o.TotalAmount) AS TotalSales FROM Categories c JOIN Orders o ON c.CategoryID = o.CategoryID GROUP BY c.CategoryName ) SELECT CategoryName, TotalSales FROM CategorySales WHERE TotalSales > 1000; -- This line is causing issues ``` I expected this to return only the categories with total sales greater than 1000, but instead, I’m getting no results at all. When I replace the `WHERE` clause with a `HAVING` clause, like so: ```sql SELECT CategoryName, TotalSales FROM CategorySales HAVING TotalSales > 1000; ``` I still don't see any results. I verified the `TotalSales` values and confirmed that some categories should meet the condition. I also double-checked that the `TotalAmount` in the `Orders` table is correctly populated. What am I missing? Is there a best practice for filtering on aggregated data in SQL Server? I’m using SQL Server 2019 and trying to adhere to best practices but this has become a roadblock. Any guidance or alternative approaches would be greatly appreciated! For context: I'm using Sql on Ubuntu. Am I missing something obvious? I've been using Sql for about a year now. Has anyone else encountered this? For reference, this is a production microservice. Cheers for any assistance! This issue appeared after updating to Sql LTS. This issue appeared after updating to Sql 3.10.