SQL in 24 Hours, Sams Teach Yourself

SQL in 24 Hours, Sams Teach Yourself

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Includes Coverage of Oracle and Microsoft SQL Implementations

In just 24 lessons of one hour or less, Sams Teach Yourself SQL in 24 Hours, Sixth Edition, helps you use SQL to build effective databases, efficiently retrieve data, and manage everything from performance to security.

This book’s straightforward, step-by-step approach shows you how to work with database structures, objects, queries, tables, and more. In just hours, you will be applying advanced techniques, including views, transactions, web connections, and powerful Oracle and SQL Server extensions. Every lesson builds on what you’ve already learned, giving you a rock-solid foundation for real-world success.

Step-by-step instructions carefully walk you through the most common SQL tasks.
Practical, hands-on examples show you how to apply what you learn.
Quizzes and exercises help you test your knowledge and stretch your skills.
Notes and tips point out shortcuts and solutions.

Learn how to…
• Define efficient database structures and objects
• “Normalize” raw databases into logically organized tables
• Edit relational data and tables with DML
• Manage transactions
• Write effective, well-performing queries
• Categorize, summarize, sort, group, and restructure data
• Work with dates and times
• Join tables in queries, use subqueries, and combine multiple queries
• Master powerful query optimization techniques
• Administer databases and manage users
• Secure databases and protect data
• Use views, synonyms, and the system catalog
• Extend SQL to the enterprise and Internet
• Master important Oracle and Microsoft extensions to ANSI SQL

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Product Details

ISBN-13: 9780134305899
Publisher: Pearson Education
Publication date: 12/11/2015
Series: Sams Teach Yourself
Sold by: Barnes & Noble
Format: NOOK Book
Pages: 430
File size: 21 MB
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About the Author

For more than 20 years each, the authors have studied, applied, and documented the SQL standard and its application to critical database systems in this book. The authors are experts in data management, specializing in Oracle, Microsoft, and other leading technologies.

Ryan Stephens is the co-founder and CEO of Perpetual Technologies, Inc. and Indy Data Partners in Indianapolis. Ryan has studied and consulted in the IT field for more than 20 years, specializing in data management, SQL, and Oracle. Ryan authored and taught database and SQL classes for Indiana University-Purdue University in Indianapolis for 5 years, and was a programmer analyst for the Indiana Army National Guard for 12 years. Ryan has written a variety of database and SQL books for Sams Publishing.

Arie D. Jones is the Vice President for Emerging Technologies for Indy Data Partners, Inc. (IDP) in Indianapolis. Arie leads IDP’s team of experts in planning, design, development, deployment, and management of database environments and applications to achieve the best combination of tools and services for each client. He is a regular speaker at technical events and has authored several books and articles pertaining to database-related topics.

Ronald Plew is retired as co-founder and vice president of Perpetual Technologies, Inc. Ron studied and consulted in the field of relational database technology for more than 20 years and has co-authored several books for Sams Publishing. Ron taught SQL and database classes for Indiana University-Purdue University in Indianapolis for 5 years. He is a retired programmer analyst from the Indiana Army National Guard.

Table of Contents

Hour 1: Welcome to the World of SQL     1

SQL Definition and History     1
SQL Sessions     8
Types of SQL Commands     8
Canary Airlines: The Database Used in This Book     11
Summary     15
Q&A     16
Workshop     16

Hour 2: Defining Data Structures     19

What Is Data?     19
Basic Data Types     20
Summary     28
Q&A    29
Workshop     29
Hour 3: Managing Database Objects     33
Database Objects and Schema     33
Tables: The Primary Storage for Data    35
Integrity Constraints     44
Summary    49
Q&A     50
Workshop     50
Hour 4: The Normalization Process    55
Normalizing a Database     55
Denormalizing a Database    63
Summary     64
Q&A    64
Workshop     64
Hour 5: Manipulating Data     67
Overview of Data Manipulation     67
Populating Tables with New Data     68
Updating Existing Data    73
Deleting Data from Tables     75
Summary     76
Q&A     77
Workshop     77
Hour 6: Managing Database Transactions    81
What Is a Transaction?     81
Controlling Transactions     82
Poor Transactional Control     90
Summary     90
Q&A     90
Workshop     91

Hour 7: Introduction to Database Queries     93

The SELECT Statement     93
Case-Sensitivity     101
Fundamentals of Query Writing    102
Summary     106
Q&A     106
Workshop     107
Hour 8: Using Operators to Categorize Data     109
What Is an Operator in SQL?     109
Comparison Operators     110
Logical Operators    113
Conjunctive Operators     120
Negative Operators     123
Arithmetic Operators     128
Summary     130
Q&A    131
Workshop     131
Hour 9: Summarizing Data Results from a Query     133
Aggregate Functions     133
Summary    141
Q&A     142
Workshop    142
Hour 10: Sorting and Grouping Data    145
Why Group Data?     145
The GROUP BY Clause     146
GROUP BY Versus ORDER BY     150
CUBE and ROLLUP Expressions    153
The HAVING Clause     155
Summary     156
Q&A     157
Workshop     157
Hour 11: Restructuring the Appearance of Data     159
ANSI Character Functions     159
Common Character Functions     160
Miscellaneous Character Functions     169
Mathematical Functions    172
Conversion Functions     173
Combining Character Functions     176
Summary    177
Q&A     177
Workshop     178
Hour 12: Understanding Dates and Times     181
How Is a Date Stored?     181
Date Functions     183
Date Conversions     188
Summary     193
Q&A     194
Workshop     194

Hour 13: Joining Tables in Queries     197

Selecting Data from Multiple Tables     197
Understanding Joins     198
Join Considerations     207
Summary     210
Q&A     210
Workshop    211
Hour 14: Using Subqueries to Define Unknown Data     213
What Is a Subquery?     213
Embedded Subqueries    219
Correlated Subqueries     223
Subquery Performance     225
Summary     225
Q&A     226
Workshop     226
Hour 15: Combining Multiple Queries into One     229
Single Queries Versus Compound Queries     229
Compound Query Operators     230
Using ORDER BY with a Compound Query     235
Using GROUP BY with a Compound Query     237
Retrieving Accurate Data     238
Summary     239
Q&A     239
Workshop     240

Hour 16: Using Indexes to Improve Performance    243

What Is an Index?     243
How Do Indexes Work?     244
The CREATE INDEX Command     245
Types of Indexes     245
When Should Indexes Be Considered?     248
When Should Indexes Be Avoided?     248
Altering an Index     250
Dropping an Index     250
Summary     251
Q&A     251
Workshop    252
Hour 17: Improving Database Performance     253
What Is SQL Statement Tuning?     253
Database Tuning Versus SQL Statement Tuning     254
Formatting Your SQL Statement     254
Full Table Scans     260
Other Performance Considerations    261
Cost-Based Optimization     264
Summary     266
Q&A     266
Workshop    266

Hour 18: Managing Database Users     269

User Management in the Database     269
The Management Process     272
Tools Utilized by Database Users     279
Summary     279
Q&A    280
Workshop     280
Hour 19: Managing Database Security     283
What Is Database Security?     283
What Are Privileges?     284
Controlling User Access    287
Controlling Privileges Through Roles     291
Summary     293
Q&A     293
Workshop     294

Hour 20: Creating and Using Views and Synonyms     297

What Is a View?     297
Creating Views     300
Updating Data Through a View     307
Dropping a View     307
Performance Impact of Nested Views     308
What Is a Synonym?     308
Summary     310
Q&A     310
Workshop     311
Hour 21: Working with the System Catalog     313
What Is the System Catalog?     313
How Is the System Catalog Created?     314
What Is Contained in the System Catalog?     315
System Catalog Tables by Implementation     316
Querying the System Catalog     317
Updating System Catalog Objects     320
Summary    320
Q&A     321
Workshop     321

Hour 22: Advanced SQL Topics     323

Cursors    323
Stored Procedures and Functions     326
Triggers     329
Dynamic SQL    331
Call-Level Interface    331
Using SQL to Generate SQL     332
Direct Versus Embedded SQL    333
Windowed Table Functions    333
Working with XML    334
Summary     335
Q&A    335
Workshop     336
Hour 23: Extending SQL to the Enterprise, the Internet, and the Intranet     337
SQL and the Enterprise    337
Accessing a Remote Database    339
SQL and the Internet     342
SQL and the Intranet     343
Summary     344
Q&A     344
Workshop    344
Hour 24: Extensions to Standard SQL     347
Various Implementations     347
Example Extensions     350
Interactive SQL Statements     353
Summary     354
Q&A     354
Workshop     355

Appendix A: Common SQL Commands     357

SQL Statements     357
SQL Clauses     360
Appendix B: Installing Oracle and Microsoft SQL    363
Windows Installation Instructions for Oracle     363
Windows Installation Instructions for Microsoft SQL Server     365
Appendix C: Answers to Quizzes and Exercises     369
Hour 1, “Welcome to the World of SQL”     369
Hour 2, “Defining Data Structures”     371
Hour 3, “Managing Database Objects”     373
Hour 4, “The Normalization Process”     374
Hour 5, “Manipulating Data”     376
Hour 6, “Managing Database Transactions”     379
Hour 7, “Introduction to the Database Queries”     380
Hour 8, “Using Operators to Categorize Data”     383
Hour 9, “Summarizing Data Results from a Query”     386
Hour 10, “Sorting and Grouping Data”     388
Hour 11, “Restructuring the Appearance of Data”     390
Hour 12, “Understanding Dates and Times”     391
Hour 13, “Joining Tables in Queries”     392
Hour 14, “Using Subqueries to Define Unknown Data”     394
Hour 15, “Combining Multiple Queries into One”     396
Hour 16, “Using Indexes to Improve Performance”     397
Hour 17, “Improving Database Performance”     399
Hour 18, “Managing Database Users”     403
Hour 19, “Managing Database Security”     404
Hour 20, “Creating and Using Views and Synonyms”     404
Hour 21, “Working with the System Catalog”     406
Hour 22, “Advanced SQL Topics”     407
Hour 23, “Extending SQL to the Enterprise, the Internet, and the Intranet”     408
Hour 24, “Extensions to Standard SQL”     409
Appendix D: Bonus Exercises     411
Appendix E: Glossary    425
Index     429

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