SQL Help – Assignments, Debugging, and Query Support

Stephan B.

Need help with a SQL assignment, bootcamp project, or a query that won't behave? I can help.

I have worked with SQL professionally for over 14 years as a Senior Business Analyst and QA/Data Validation specialist. My experience includes writing, debugging, testing, and validating SQL against real production systems — not just textbook examples. I hold a bachelor's degree in Electronics Engineering and a master's degree from Université Côte d'Azur in France.

I work with bootcamp students, college students taking their first database course, working professionals adding SQL to their toolkit, and anyone who has been handed a database project and is not sure where to start.

I can help with SELECT statements, filtering, sorting, INNER and LEFT JOINs, subqueries, common table expressions, aggregations, GROUP BY, HAVING, window functions, stored procedures, views, and debugging queries that are not returning what you expect. I can also help with basic data cleanup and ETL logic.
Most students do not need a lecture — they need someone patient who will walk through their actual assignment or query with them and explain why SQL is doing what it is doing. I focus on building real understanding, not memorizing syntax.

Your first lesson is backed by Wyzant's Good Fit Guarantee. Message me with what you are working on, and we can walk through it together.