Access courses

SQL Refresher Course

Preview certificate

What will I learn?

Elevate your SQL skills with our SQL Refresher Course, designed for technology professionals looking to boost their database expertise. Dive into database design, master SQL query writing, and optimise performance with advanced techniques. Learn to manipulate data efficiently, explore complex queries, and stay up-to-date with the latest SQL features and best practices. This concise, high-quality course empowers you to tackle real-world challenges, ensuring you remain at the forefront of your field.

Apoia's Differentials

Online and lifetime access to courses
Certificate adhering to educational standards
Printable PDF summaries
Online assistant available at all times
Select and arrange the chapters you wish to study
Set your own course workload
Practical activities marked instantly
Study anytime, no internet needed

Develop skills

Strengthen the development of the practical skills listed below

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

Write advanced queries: Utilise CTEs, window functions, and nested queries.

Optimise SQL performance: Implement indexing and analyse execution plans.

Manipulate data effectively: Perform bulk operations and manage records.

Apply SQL best practices: Ensure 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.