1
Course orientation · about 4 min
Why learn SQL?
Understand what SQL is, where it is used and what you could build or become with it.
SQL complete beginner course
Your full SQL curriculum.
Ask useful questions of business data and turn stored information into clear answers. Complete each practical lesson in order and finish with a real portfolio project.
11 guided steps1.5 learning hours1 final project
Module 1
Start with the reason
Module 2
Understand stored data
2
Practical lesson · about 6 min
Meet a database table
Imagine helping a small shop inspect its customer list before sending an important service update.
Module 3
Find useful information
3
Practical lesson · about 7 min
Choose only the columns you need
Prepare a simple contact list without exposing purchase totals or unnecessary customer details.
4
Practical lesson · about 7 min
Filter records with WHERE
Find Berlin customers so a local business can invite only nearby people to an in-person event.
5
Practical lesson · about 8 min
Sort and limit a result
Identify the three customers who have spent the most so the business can thank its strongest supporters.
Module 4
Summarise a business
6
Practical lesson · about 8 min
Count records and calculate totals
Answer two common management questions: how many orders exist and how much revenue they produced.
7
Practical lesson · about 7 min
Calculate an average
Estimate the typical order value so a small business can understand how much customers normally spend.
8
Practical lesson · about 9 min
Group answers by category
Compare revenue across cities to decide where a local advertising campaign may have the strongest audience.
Module 5
Connect related information
9
Practical lesson · about 10 min
Join customers to their orders
Create an order follow-up list showing which person placed each order using information stored in two separate tables.
10
Practical lesson · about 10 min
Join products to sales
Discover which product names belong to recent order items instead of working with unexplained product numbers.
Module 6
Build the report
11
Final course project · about 14 min
Complete a small-business sales report
Act as a junior data analyst: produce a report the owner can use to compare cities, customers and revenue.
Final outcome
Create a small-business sales report that identifies valuable customers, popular products and revenue by city.
Complete the curriculum in order, practise each task and adapt the final project so it is genuinely yours.
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