Book Image

Learn SQL Database Programming

By : Josephine Bush
5 (1)
Book Image

Learn SQL Database Programming

5 (1)
By: Josephine Bush

Overview of this book

SQL is a powerful querying language that's used to store, manipulate, and retrieve data, and it is one of the most popular languages used by developers to query and analyze data efficiently. If you're looking for a comprehensive introduction to SQL, Learn SQL Database Programming will help you to get up to speed with using SQL to streamline your work in no time. Starting with an overview of relational database management systems, this book will show you how to set up and use MySQL Workbench and design a database using practical examples. You'll also discover how to query and manipulate data with SQL programming using MySQL Workbench. As you advance, you’ll create a database, query single and multiple tables, and modify data using SQL querying. This SQL book covers advanced SQL techniques, including aggregate functions, flow control statements, error handling, and subqueries, and helps you process your data to present your findings. Finally, you’ll implement best practices for writing SQL and designing indexes and tables. By the end of this SQL programming book, you’ll have gained the confidence to use SQL queries to retrieve and manipulate data.
Table of Contents (24 chapters)
1
Section 1: Database Fundamentals
7
Section 2: Basic SQL Querying
11
Section 3: Advanced SQL Querying
16
Section 4: Presenting Your Findings
19
Section 5: SQL Best Practices

Creating and using stored procedures

A stored procedure is a set of SQL statements stored in a database. It could be just one SQL statement or many statements. With the help of this, you can reuse certain pieces of code. This can particularly be helpful when you are grouping business logic into a set of queries that will need to be run over and over again.

Creating a stored procedure

Let's learn how to create a stored procedure. First, we'll go through the following syntax, which is used to create a stored procedure:

DELIMITER $$
CREATE PROCEDURE storedprocname()
BEGIN
your sql statments go here;
END $$
DELIMITER ;

In the previous code sample, we have the following:

  • DELIMITER lets MySQL know that there may be lines...