Top SQL Courses for Mastering Stored Procedures and Functions

For an instructor lead, in-depth look at learning SQL click below.

In the world of database management, Structured Query Language (SQL) is undebatable, the most widely used and important language. It can be used for various tasks such as managing and organizing data, updating records, and more importantly, it makes the retrieval of specific data a walk in the park. Today, we are going to talk about Stored Procedures and Functions in SQL and propose a few courses that can help you master them.

Understanding Stored Procedures

A stored procedure is a prepared SQL code that you can save so the code can be reused over and over again. They are beneficial because they are reusable and thus can be shared by a number of programs. They enhance productivity and performance.

Here is an example of a Stored Procedure:

In the code above, it creates a stored procedure which selects all data stored in the Customers table. To use this stored procedure, you can simply call it by its name as follows:

Understanding Functions

A function, on the other hand, is compiled and executed whenever it is called. They make code more readable, easy to debug, and the logic inside the function is self-contained.

Here is an example of a Function:

In the code above, the function returns the total number of orders by a particular customer. It receives a Customer ID as an input and returns the count of all orders made by this customer.