Mark

Hi! I'm Mark, a data analyst with real-world experience working with SQL across various industries. I offer practical, hands-on SQL classes designed to help you not only learn the syntax but truly understand how to work with data.

How My Classes Work
My approach is simple and personalized:

We start with your level (beginner, intermediate, or advanced) and build from there.

Each class includes real-world examples, not just theory.

You'll learn how to write queries, manipulate data, join tables, and much more.

I include live problem-solving, small projects, and exercises to practice.

Topics I Cover
SQL basics (SELECT, WHERE, ORDER BY, etc.)

JOINs and subqueries

GROUP BY, aggregations, and window functions

Data cleaning and exploration with SQL

Writing efficient and readable queries

Tips for interviews or technical tests

About Me
I’ve been working as a data analyst for over 9 years, helping companies turn raw data into insights. SQL is one of my main tools, and I’ve taught it to professionals, students, and teams in a way that’s clear, useful, and engaging.

Whether you're just starting or need help mastering complex queries, I’ll make sure you get the confidence and skills to use SQL effectively.

Looking forward to working with you!