Learning SQL, Second Edition Master SQL Fundamentals

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Description

Updated for the latest database management systems, this introductory guide will get you up and running with SQL quickly. Whether you need to write database applications, perform administrative tasks, or generate reports, Learning SQL, Second Edition, will help you easily master all the SQL fundamentals. Each chapter presents a self-contained lesson on a key SQL concept or technique, with numerous illustrations, annotated examples, and exercises to let you practice the skills you learn.

Full Description

Updated for the latest database management systems — including MySQL 6.0, Oracle 11g, and Microsoft’s SQL Server 2008 — this introductory guide will get you up and running with SQL quickly. Whether you need to write database applications, perform administrative tasks, or generate reports, Learning SQL, Second Edition, will help you easily master all the SQL fundamentals.Each chapter presents a self-contained lesson on a key SQL concept or technique, with numerous illustrations and annotated examples. Exercises at the end of each chapter let you practice the skills you learn. With this book, you will:

Move quickly through SQL basics and learn several advanced features
Use SQL data statements to generate, manipulate, and retrieve data
Create database objects, such as tables, indexes, and constraints, using SQL schema statements
Learn how data sets interact with queries, and understand the importance of subqueries
Convert and manipulate data with SQL’s built-in functions, and use conditional logic in data statements

Knowledge of SQL is a must for interacting with data. With Learning SQL, you’ll quickly learn how to put the power and flexibility of this language to work.

Table of Contents

Chapter 1 A Little Background
1. Introduction to Databases
2. What Is SQL?
3. What Is MySQL?
4. What’s in Store
Chapter 2 Creating and Populating a Database
1. Creating a MySQL Database
2. Using the mysql Command-Line Tool
3. MySQL Data Types
4. Table Creation
5. Populating and Modifying Tables
6. When Good Statements Go Bad
7. The Bank Schema
Chapter 3 Query Primer
1. Query Mechanics
2. Query Clauses
3. The select Clause
4. The from Clause
5. The where Clause
6. The group by and having Clauses
7. The order by Clause
8. Test Your Knowledge
Chapter 4 Filtering
1. Condition Evaluation
2. Building a Condition
3. Condition Types
4. Null: That Four-Letter Word
5. Test Your Knowledge
Chapter 5 Querying Multiple Tables
1. What Is a Join?
2. Joining Three or More Tables
3. Self-Joins
4. Equi-Joins Versus Non-Equi-Joins
5. Join Conditions Versus Filter Conditions
6. Test Your Knowledge
Chapter 6 Working with Sets
1. Set Theory Primer
2. Set Theory in Practice
3. Set Operators
4. Set Operation Rules
5. Test Your Knowledge
Chapter 7 Data Generation, Conversion, and Manipulation
1. Working with String Data
2. Working with Numeric Data
3. Working with Temporal Data
4. Conversion Functions
5. Test Your Knowledge
Chapter 8 Grouping and Aggregates
1. Grouping Concepts
2. Aggregate Functions
3. Generating Groups
4. Group Filter Conditions
5. Test Your Knowledge
Chapter 9 Subqueries
1. What Is a Subquery?
2. Subquery Types
3. Noncorrelated Subqueries
4. Correlated Subqueries
5. When to Use Subqueries
6. Subquery Wrap-up
7. Test Your Knowledge
Chapter 10 Joins Revisited
1. Outer Joins
2. Cross Joins
3. Natural Joins
4. Test Your Knowledge
Chapter 11 Conditional Logic
1. What Is Conditional Logic?
2. The Case Expression
3. Case Expression Examples
4. Test Your Knowledge
Chapter 12 Transactions
1. Multiuser Databases
2. What Is a Transaction?
3. Test Your Knowledge
Chapter 13 Indexes and Constraints
1. Indexes
2. Constraints
3. Test Your Knowledge
Chapter 14 Views
1. What Are Views?
2. Why Use Views?
3. Updatable Views
4. Test Your Knowledge
Chapter 15 Metadata
1. Data About Data
2. Information_Schema
3. Working with Metadata
4. Test Your Knowledge
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Chapter 1 A Little Background

Introduction to Databases

What Is SQL?

What Is MySQL?

What’s in Store

Chapter 2 Creating and Populating a Database

Creating a MySQL Database

Using the mysql Command-Line Tool

MySQL Data Types

Table Creation

Populating and Modifying Tables

When Good Statements Go Bad

The Bank Schema

Chapter 3 Query Primer

Query Mechanics

Query Clauses

The select Clause

The from Clause

The where Clause

The group by and having Clauses

The order by Clause

Test Your Knowledge

Chapter 4 Filtering

Condition Evaluation

Building a Condition

Condition Types

Null: That Four-Letter Word

Test Your Knowledge

Chapter 5 Querying Multiple Tables

What Is a Join?

Joining Three or More Tables

Self-Joins

Equi-Joins Versus Non-Equi-Joins

Join Conditions Versus Filter Conditions

Test Your Knowledge

Chapter 6 Working with Sets

Set Theory Primer

Set Theory in Practice

Set Operators

Set Operation Rules

Test Your Knowledge

Chapter 7 Data Generation, Conversion, and Manipulation

Working with String Data

Working with Numeric Data

Working with Temporal Data

Conversion Functions

Test Your Knowledge

Chapter 8 Grouping and Aggregates

Grouping Concepts

Aggregate Functions

Generating Groups

Group Filter Conditions

Test Your Knowledge

Chapter 9 Subqueries

What Is a Subquery?

Subquery Types

Noncorrelated Subqueries

Correlated Subqueries

When to Use Subqueries

Subquery Wrap-up

Test Your Knowledge

Chapter 10 Joins Revisited

Outer Joins

Cross Joins

Natural Joins

Test Your Knowledge

Chapter 11 Conditional Logic

What Is Conditional Logic?

The Case Expression

Case Expression Examples

Test Your Knowledge

Chapter 12 Transactions

Multiuser Databases

What Is a Transaction?

Test Your Knowledge

Chapter 13 Indexes and Constraints

Indexes

Constraints

Test Your Knowledge

Chapter 14 Views