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

Summary

In this chapter, you learned how to gather information from a table to use it to INSERT, UPDATE, and DELETE data. You learned how to insert data using single- and multiple-row methods. You also learned how to create a new table and insert data from an existing table into it, as well as how to insert data from an existing table into another existing table.

You learned how to delete all the data from a table and how to delete only some data in a table. You also learned how to update all the data in a table and how to update only some of the data in a table. You learned what a transaction is and how to use it, including how to start a transaction and how to commit or roll back a transaction.

Finally, you learned how to modify the table structure, including how to add and drop columns, how to rename a column, how to change the data type of a column, how to add, change,...