SQL Refresher Course

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Basic course of 4 hours free

Completion certificate

AI tutor

Practical activities

Online and lifelong course

What will I learn?

Sharpen your SQL skills with our SQL Refresher Course, designed for tech professionals looking to boost their database know-how. Get stuck in to database design, become a master at writing SQL queries, and optimise performance with advanced methods. Learn to handle data properly, explore complex queries, and keep up-to-date with the latest SQL features and best practices. This short, but top-notch course gives you the power to tackle real-world problems, making sure you stay ahead of the game in your field.

Weekly live mentoring rooms

Rely on our team of specialists to assist you weekly

Imagine learning something while clearing your doubts with experienced professionals? At Apoia, this is possible

Gain access to open rooms with various industry professionals


Expand your network


Exchange experiences with specialists from other areas and solve your professional challenges.

Learning outcomes

Strengthen the development of the practical skills listed below

Master database design: Build proper schemas with primary and foreign keys.

Write advanced queries: Use CTEs, window functions, and nested queries properly.

Optimise SQL performance: Put indexing in place and have a look at execution plans.

Handle data effectively: Do bulk operations and manage records.

Use SQL best practices: Make sure security is tight and use the latest SQL features.