Learn SQL from basics to advanced concepts and master database querying with real-world examples.
Instructor Ayan Hasnain
Overview
This course takes you from SQL fundamentals to advanced database concepts through a structured, practical roadmap.
You won’t just learn SQL syntax. You’ll understand how databases work, how to write better queries, how to design databases, and how to optimize them for real-world applications.
* What is SQL?
* Relational databases
* Tables, rows & columns
* Data types
* SELECT, INSERT, UPDATE, DELETE
* Filtering & sorting
* WHERE, ORDER BY, LIMIT
* Primary & Foreign Keys
* Relationships
* JOIN operations
* GROUP BY & HAVING
* Aggregate functions
* Subqueries
* Common Table Expressions (CTEs)
* Database normalization
* Relationships & constraints
* Schema design
* One-to-one, one-to-many & many-to-many relationships
* Data integrity
* Window functions
* Views
* Stored procedures
* Functions
* Triggers
* Advanced querying techniques
* How indexes work
* Creating effective indexes
* Query optimization
* EXPLAIN & query plans
* Avoiding common performance problems
* Transactions
* ACID properties
* Isolation levels
* Locks
* Concurrency
* Deadlocks
* Build practical database schemas
* Solve real-world SQL problems
* Write production-style queries
* Analyze and optimize queries
* Work with SQL in backend applications
By the end of this course, you’ll be able to:
Write SQL confidently, design relational databases, understand database internals, and build efficient queries for real-world applications.
Beginners starting SQL from scratch
Developers working with backend applications
Students preparing for technical interviews
Engineers who want stronger database fundamentals
Don't just learn SQL. Understand databases.
From your first SELECT query to indexes, transactions, optimization, and production-ready database design, this roadmap gives you a clear path to becoming confident with SQL.
Curriculum
3 chapters · 3 lessons · Enroll to unlock
SQL Fundamentals
In this chapter, you’ll build a strong foundation in SQL and learn how databases work. We’ll cover the essential concepts you need before moving into advanced SQL queries and real-world data analysis.
SQL working with data
In this chapter, you’ll learn how to work with real data using SQL. You’ll start writing practical queries to retrieve, filter, sort, and analyze information from database tables.
softskills
learn about the fundamentals
FAQs