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)
Section 1: Database Fundamentals
Section 2: Basic SQL Querying
Section 3: Advanced SQL Querying
Section 4: Presenting Your Findings
Section 5: SQL Best Practices

Using the ORDER BY clause

The ORDER BY clause helps you sort your results. You can sort your results in a few different ways, all of which will be covered in the following sections.

Learning how to use the ORDER BY clause to order query results

The ORDER BY clause is placed after FROM, as well as after WHERE, if you have a WHERE clause. You can order columns by ascending or descending order. Ascending is the default sort order, so you don't need to specify ascending explicitly.

Do not depend on the order of the rows in a result set, unless you have specified an ORDER BY clause. The order in which rows are returned may or may not be the same without an ORDER BY explicitly defined in your query.

To sort the columns...