SELECT Basics & Filtering
Master the SELECT statement, WHERE clauses, and logical operators. Learn to filter, sort, and limit data like a pro.
Data Track
SQL for Developers
SQL for Developers
Queries, Schemas & Performance
Most developers are terrified of the database. This 4-week bootcamp replaces that fear with confidence. You'll go from `SELECT *` to optimizing execution plans that save your company money.
18 Lessons • 4 Weeks • Beginner to Intermediate
The Problem
You write great apps, but you avoid the database.
You know JavaScript and React. You can build a frontend that looks amazing. But the moment you have to write a JOIN or optimize a slow query, you hit a wall. You feel like a fraud. You copy-paste snippets from StackOverflow hoping they don't break.
It doesn't have to be this way. SQL is a skill, not a superpower. RunIt removes the academic fluff and focuses on the practical mechanics that matter in the real world. In four weeks, you'll stop hiding from your data and start mastering it.
The Curriculum
Week 1
Week 2
Week 3
Week 4
From `SELECT *` to Production Performance
We don't just teach you syntax. We teach you how to think in sets, structure data for scale, and debug performance issues before they hit production.
JOINs & Relationships
Stop writing subqueries. Learn INNER, LEFT, RIGHT, and FULL OUTER JOINs to combine data from multiple tables efficiently.
Indexing & Performance
Understand B-Trees, covering indexes, and query plans. Learn why your query is slow and how to fix it with `EXPLAIN`.
Real Schema Design
Build a production-grade schema from scratch. Normalization, denormalization, and data modeling for a scalable API.
The Environment
Live SQL Sandbox embedded in every lesson.
Theory is fine, but execution is everything. Every single lesson in this course includes a persistent, browser-based SQL sandbox. You don't need to install PostgreSQL. You don't need to set up Docker.
sql-learner-sandbox
> SELECT * FROM users LIMIT 5;
+----+-----------+
+----+-----------+
| id | name |
+----+-----------+
| 1 | Sarah |
| 2 | Mike |
+----+-----------+
+----+-----------+
| id | name |
+----+-----------+
| 1 | Sarah |
| 2 | Mike |
+----+-----------+
Student Stories
"I finally stopped ignoring the database."
I used to be the backend developer who just passed JSON objects back and forth. After this course, I optimized a slow query that saved our company $2k/month in AWS costs. I actually understand what's happening under the hood now.
The schema design project was brutal but amazing. I learned how to model a complex e-commerce system properly. I got the job offer at the startup I interviewed with because I could talk intelligently about database indexes.
The Outcome
A certificate that proves you shipped it.
At RunIt, we don't give you a piece of paper that says "You watched videos." We give you a certificate that says "You built this." Every student must complete the final schema design project to graduate.
Ready to Run It?
Join 2,400+ developers mastering SQL.
$149 one-time payment. Lifetime access. 30-day money-back guarantee.