What changes are you trying to make? (e.g. Adding or removing code, refactoring existing code, adding reports)

I wrote and tested SQL queries to practice retrieving, filtering, joining, aggregating data, and creating temp tables.

What did you learn from the changes you have made?

I learned how to use key SQL clauses like GROUP BY, HAVING, CASE, and joins to manipulate and analyze data effectively.

Was there another approach you were thinking about making? If so, what approach(es) were you thinking of?

No

Were there any challenges? If so, what issue(s) did you face? How did you overcome it?

No

How were these changes tested?

I tested all queries on the database to verify they returned correct and expected results.

A reference to a related issue in your repository (if applicable)

N/A

Checklist

• I can confirm that my changes are working as intended