Summary
Explore how to merge data from two or more tables using join and left join clauses, utilize subqueries for advanced querying, and apply aggregate functions like sum() to gain meaningful insights. Understand how to label columns, count distinct values, handle nulls, and limit query results for better data analysis.
We'll cover the following...
We'll cover the following...
Learning outcome
In this chapter, we learned to query and get useful information. We went over how to combine data from two or more different tables. Combining information wasn’t restricted to information coming from tables ...