SQLite query with GROUP BY and aggregate function returning unexpected results
Does anyone know how to I've looked through the documentation and I'm still confused about I've looked through the documentation and I'm still confused about I'm working with SQLite 3.36.0 and trying to aggregate data using a query that includes a `GROUP BY` clause along with an aggregate function. I have a table named `sales` with the following structure: ```sql CREATE TABLE sales ( id INTEGER PRIMARY KEY, product TEXT, quantity INTEGER, sale_date DATE ); ``` The goal is to get the total quantity sold for each product on a specific date. However, when I run the following query: ```sql SELECT product, SUM(quantity) as total_quantity FROM sales WHERE sale_date = '2023-10-01' GROUP BY product; ``` I expected to see a list of products with their corresponding total quantities sold on that date. Instead, I get this output: ``` product | total_quantity ------------|---------------- gadget | 5 widget | 3 widget | 2 ``` It seems like I'm getting duplicate entries for the same product. I’ve double-checked the data and there are no actual duplicates in the `sales` table for that date. I've also tried adding `DISTINCT` to the `SELECT` statement, but it didn't resolve the scenario. I suspect it might be related to how I’m aggregating the data or possibly an scenario with the `GROUP BY` clause, but I need to pinpoint the question. Any insights on why I'm getting duplicated products in the result and how to fix this would be greatly appreciated! For context: I'm using Sql on Linux. My development environment is CentOS. What are your experiences with this?