How can I use SQL for data analysis?

How can I use SQL for data analysis?

You can use SQL to query databases, aggregate data, and perform complex analyses. What specific analysis are you interested in?

I'm looking to analyze sales data to find trends.

You can start by using the SELECT statement to retrieve sales data, and then use GROUP BY to aggregate it by time periods.

Can you give me an example query for that?

Sure! A basic query could be: SELECT DATE_TRUNC('month', sale_date) AS month, SUM(amount) AS total_sales FROM sales GROUP BY month ORDER BY month; This will give you total sales per month.

What if I want to compare sales across different regions?

You can add a WHERE clause to filter by region and include the region in your GROUP BY clause. For example: SELECT region, SUM(amount) AS total_sales FROM sales WHERE sale_date >= '2023-01-01' GROUP BY region;