A grouping operation puts members of same attribute in a set into same group. In an employee table grouped by department, each group of employees work in the same department. In a grouped sales table ...

Now, write SQL queries to answer questions about the data in the babe_ruth_stats table. You can display all results using pandas for readability. Return the total number of years Babe Ruth played with ...

This article is also available as a PDF download. Arranging data in a manner that’s meaningful can be a challenge. Sometimes all you need is a simple sort. Often, you need more–you need groups you can ...