Demo chapter 1

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              1
            
SELECT 'demo';

Task

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Section 1. Chapter 1


              1
            
SELECT 'demo';

Task

Swipe to start coding

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

Thanks for your feedback!

Section 1. Chapter 1

Switch to desktop for real-world practiceContinue from where you are using one of the options below