For an instructor lead, in-depth look at learning SQL click below.
The world of SQL is vast and complex, but with the right set of tutorials, you can master this powerful language in no time. These ten SQL courses, complete with interactive quizzes and projects, make learning SQL an engaging and practical experience.
1. SQL Basics
This course covers the fundamentals of SQL, including how to create, read, update, and delete records from a database. The course concludes with an interactive quiz that tests your newfound skills.
Here’s a sample SQL code that you’ll learn:
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-- This is a comment. It's always good to comment your SQL code. -- Let's create a table named "Customers". CREATE TABLE Customers ( CustomerID int, CustomerName varchar(255), ContactName varchar(255), Country varchar(255), City varchar(255), PostalCode varchar(255) ); |
2. Advanced SQL
For those already familiar with the basics, this advanced course will take your SQL skills to the next level, covering complex topics like subqueries and window functions. The provided project allows you to apply these new concepts in a practical setting.
Here’s a sample code of a subquery in SQL:
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-- Using a subquery to find the average price of all products. SELECT AVG(Price) FROM ( SELECT Price FROM Products ) AS ProductPrices; |
3. SQL for Data Analytics
Data is the new oil, and knowing how to query it effectively is a pivotal skill. This course will teach you how to harness the power of SQL to perform data analysis. Interactive quizzes and projects make it a hands-on experience.
An example of SQL code used in data analytics:
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-- Getting the total number of orders per country SELECT Country, COUNT(*) as TotalOrders FROM Orders GROUP BY Country; |
… And more
These are just a few of the engaging courses available to master SQL. By learning through hands-on practice and interactive quizzes, you’ll be writing efficient, effective SQL code in no time!