Access courses

SQL Refresher Course

Preview certificate

What will I learn?

Boost your SQL skills with our SQL Refresher Course, tailored for tech professionals looking to sharpen their database expertise. Delve into database design, become a dab hand at SQL query writing, and optimise performance using advanced techniques. Learn to manipulate data efficiently, explore intricate queries, and keep up-to-date with the latest SQL features and best practices. This concise, high-quality course will empower you to tackle real-world challenges, ensuring you stay ahead of the game.

Apoia's Advantages

Online and lifetime access to courses
Certificate aligned with educational standards
Printable PDF summaries
Online support always available
Select and arrange the chapters you'd like to study
Set your own course workload
Instant feedback on practical activities
Study at your convenience, no internet required

Develop skills

Strengthen the development of the practical skills listed below

Master database design: Craft efficient schemas with primary and foreign keys.

Write advanced queries: Make use of CTEs, window functions, and nested queries.

Optimise SQL performance: Implement indexing and analyse execution plans.

Manipulate data effectively: Carry out bulk operations and manage records.

Apply SQL best practices: Guarantee security and adopt the latest SQL features.

Suggested summary

Workload: between 4 and 360 hours

Before starting, you can change the chapters and the workload.

  • Choose which chapter to start with
  • Add or remove chapters
  • Increase or decrease the course workload

Examples of chapters you can add

You will be able to generate more chapters like the examples below

This is a free course, focused on personal and professional development. It is not equivalent to a technical, undergraduate, or postgraduate course, but offers practical and relevant knowledge for your professional journey.