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If you’re already deeply immersed in SQL and are seeking to further enhance your skills, then you are at the right place. In this blog post, we have listed some of the best advanced SQL courses available online that will surely take your SQL game to a higher level. So without further ado, let’s get right into it.
1. Advanced SQL for Data Engineers by DataCamp
This advanced course is specifically designed for data engineers who want to explore complex SQL structures and commands. You’ll learn how to work with hierarchical queries, perform analytic functions, and manipulate large data sets with ease.
For instance, let’s take a look at this code snippet that demonstrates a hierarchical query:
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WITH RECURSIVE hierarchy AS ( SELECT employee_id, manager_id FROM employees WHERE manager_id IS NULL UNION ALL SELECT e.employee_id, e.manager_id FROM employees e INNER JOIN hierarchy h ON h.employee_id = e.manager_id ) SELECT * FROM hierarchy; |
2. SQL: Mastering MySQL and MariaDB by Coursera
If you are working with MariaDB or MySQL, this is the perfect course for you. You’ll learn to master complex queries and database schema design. Furthermore, you’ll dive into writing stored procedures and triggers to optimise your database operations.
Here’s an example of an SQL stored procedure:
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DELIMITER $$ CREATE PROCEDURE GetCustomerOrders (IN CustomerID INT) BEGIN SELECT * FROM orders WHERE customer_id = CustomerID; END $$ DELIMITER ; |
3. Oracle SQL: Become an SQL Developer by Udemy
This course, designed specifically for Oracle database users, provides an in-depth understanding of SQL functions, procedures, and advanced querying techniques. You’ll learn to use Oracle’s SQL*Plus and SQL Developer tools efficiently.
Here is a simple example of calling a procedure in Oracle:
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DECLARE v_customer_id customers.customer_id%TYPE := 100; BEGIN get_customer_orders(v_customer_id); END; |
Hopefully, this blog post has helped you identify the best advanced SQL techniques courses for you. All you’ve to do now is register for the one that suits you best, and start your journey towards mastering SQL. Happy learning!