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SQL Refresher Course

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What will I learn?

Make your SQL skills strong again with our SQL Brain Sharpening Course. This course is for people who work with computers and want to know more about how to use database. You will learn how to plan database, how to write good SQL questions, and how to make your database run fast. You will also learn how to change data easily, how to ask hard questions, and how to keep up with the new things in SQL. This short, good course will help you solve real problems and make sure you stay on top of your game.

Apoia's Unique Features

Accessible online course for a lifetime
Certificate aligned with educational standards
Printable PDF summaries
Online support available at all times
Select and arrange the chapters you wish to study
Set your own course workload
Instant feedback on practical activities
Study anytime, no internet required

Develop skills

Enhance your practical skills in the areas listed below.

Learn how to plan database well: Make good plans with primary and foreign keys.

Write hard questions: Use CTEs, window functions, and questions inside questions.

Make SQL run fast: Use indexing and look at how the computer is running the questions.

Change data easy: Do big changes and take care of records.

Do SQL the best way: Make sure it is safe and use the newest things in SQL.

Suggested summary

Workload: between 4 and 360 hours

Before starting, you can modify 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 it offers practical and relevant knowledge for your professional journey.