Total Spent per Category: Write a query to find the total amount you spent in each category (Groceries, Entertainment, etc.). Hint: Use GROUP BY category and SUM(amount).

Sure, here is a step-by-step guide on how to write the SQL query:

1. First, you need to select the category column from your table. Let's assume your table name is expenses. So, the beginning of your query will look like this: SELECT category.

2. Next, you want to find the total amount spent in each category. For this, you will use the SUM function on the amount column. Now your query looks like this: SELECT category, SUM(amount).

3. As you want to get the total amount spent for each category, you need to group the results by the category. You do this using the GROUP BY clause. Now your query looks like this: SELECT category, SUM(amount) FROM expenses GROUP BY category.

4. If you want to order the results by the total amount spent, you can add an ORDER BY clause at the end: SELECT category, SUM(amount) AS total_spent FROM expenses GROUP BY category ORDER BY total_spent DESC.

So, the final SQL query will look like this:

SELECT category, SUM(amount) AS total_spent 
FROM expenses 
GROUP BY category 
ORDER BY total_spent DESC;

This query will return a list of categories along with the total amount spent in each, ordered from the category where you spent the most to the one where you spent the least.