For an instructor lead, in-depth look at learning SQL click below.
In the compelling world of computer programming, SQL (Structured Query Language) stands as one of the most important languages you can learn. Often undervalued, its key role in data analysis and manipulation is sought after amongst industry professionals.
Why Learn SQL?
SQL is the standard language for managing and manipulating databases. It allows you to query data, manipulate data, define data, and control access. Despite the endless emergence of newer, flashier languages, SQL’s usefulness holds strong and truly mastering it will pave a career path like no other.
Let’s take a look at this simple SQL query:
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SELECT * FROM Employees WHERE Employee_ID = 5; |
This SQL statement selects all columns from the “Employees” table, for rows where the “Employee_ID” equals 5. This gives you the ability to extract exactly the data you need.
Top SQL Learning Paths
1. Coursera – SQL for Data Science
This course gives a comprehensive introduction to SQL. The primary goal for beginners is to understand the basic concepts. The modules are designed such that it combines the theoretical knowledge with practical skills.
2. Codecademy – Learn SQL
It’s an online interactive platform that offers free coding classes in various programming languages including SQL. The most attractive feature about Codecademy is that you learn SQL interactively.
3. SQLZoo
SQLZoo offers a nice interactive SQL tutorial wherein you could write SQL in a text box and hit “submit SQL” to test your theories.
For example, you might learn to write a statement like:
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UPDATE Customers SET Country = 'USA' WHERE Customer_ID = 1; |
This statement updates the “Customers” table, setting the “Country” to ‘USA’ for the row where the “Customer_ID” equals 1.
Conclusion
There’s no denying the importance of SQL in today’s data-driven world. It’s an essential tool for Data Analysts, Data Scientists, Database Administrators and anyone else dealing with data. The courses recommended equip learners with the required expertise and knowledge to master SQL.
No matter your role, even a basic understanding of SQL will enable you to better manipulate and analyze data- an increasingly crucial skill in today’s digital world.