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By Chris Fehily
Publisher: Peachpit Press
Pub Date: May 12, 2005
Print ISBN: 0-321-33417-5
Pages: 480

As dynamic, database-driven Web sites become the standard, more and more nonprogrammers just like yourself are being forced to work with database information and create and edit database objects. With SQL and this task-based guide to it, you can do it too--no programming experience required!After going over the relational database model and SQL syntax in the first few chapters, veteran author Chris Fehily launches into the tasks that will get you comfortable with SQL fast. In addition to explaining SQL basics, this updated reference covers the ANSI SQL:2003 standard and contains a wealth of brand-new information, including a new chapter on set operations and common tasks, well-placed optimization tips to make your queries run fast, sidebars on advanced topics, and added IBM DB2 coverage.Best of all, the book's examples were tested on the latest versions of Microsoft Access, Microsoft SQL Server, Oracle, IBM DB2, MySQL, and PostgreSQL. On the companion Web site, you can download the SQL scripts and sample database for all these systems and put your knowledge to work immediately on a real database.

About SQL
About This Book
What You'll Need
Chapter 1. DBMS Specifics
Running SQL Programs
Microsoft Access
Microsoft SQL Server
Chapter 2. The Relational Model
Tables, Columns, and Rows
Primary Keys
Foreign Keys
The Sample Database
Chapter 3. SQL Basics
SQL Syntax
SQL Standards and Conformance
Data Types
Character String Types
Binary Large Object Type
Exact Numeric Types
Approximate Numeric Types
Boolean Type
Datetime Types
Interval Types
Other Data Types
Chapter 4. Retrieving Data From a Table
Retrieving Columns with SELECT and FROM
Creating Column Aliases with AS
Eliminating Duplicate Rows with DISTINCT
Sorting Rows with ORDER BY
Filtering Rows with WHERE
Combining and Negating Conditions with AND, OR, and NOT
Matching Patterns with LIKE
Range Filtering with BETWEEN
List Filtering with IN
Testing for Nulls with IS NULL
Chapter 5. Operators and Functions
Creating Derived Columns
Performing Arithmetic Operations
Determining the Order of Evaluation
Concatenating Strings with ||
To concatenate strings
Extracting a Substring with SUBSTRING()
Changing String Case with UPPER() and LOWER()
Trimming Characters with TRIM()
Finding the Length of a String with CHARACTER_LENGTH()
Finding Substrings with POSITION()
Performing Datetime and Interval Arithmetic
Getting the Current Date and Time
Getting User Information
Converting Data Types with CAST()
Evaluating Conditional Values with CASE
Checking for Nulls with COALESCE()
Comparing Expressions with NULLIF()
Chapter 6. Summarizing and Grouping Data
Using Aggregate Functions
Creating Aggregate Expressions
Finding a Minimum with MIN()
Finding a Maximum with MAX()
Calculating a Sum with SUM()
Calculating an Average with AVG()
Counting Rows with COUNT()
Aggregating Distinct Values with DISTINCT
Grouping Rows with GROUP BY
Filtering Groups with HAVING
Chapter 7. Joins
Qualifying Column Names
Creating Table Aliases with AS
Using Joins
Creating Joins with JOIN or WHERE
Creating a Cross Join with CROSS JOIN
Creating a Natural Join with NATURAL JOIN
Creating an Inner Join with INNER JOIN
Creating Outer Joins with OUTER JOIN
Creating a Self-Join
Chapter 8. Subqueries
Understanding Subqueries
Subquery Syntax
Subqueries vs. Joins
Simple and Correlated Subqueries
Qualifying Column Names in Subqueries
Nulls in Subqueries
Using Subqueries as Column Expressions
Comparing a Subquery Value by Using a Comparison Operator
Testing Set Membership with IN
Comparing All Subquery Values with ALL
Comparing Some Subquery Values with ANY
Testing Existence with EXISTS
Comparing Equivalent Queries
Chapter 9. Set Operations
Combining Rows with UNION
Finding Common Rows with INTERSECT
Finding Different Rows with EXCEPT
Calculating Running Statistics
Generating Sequences
Finding Sequences, Runs, and Regions
Limiting the Number of Rows Returned
Assigning Ranks
Calculating a Trimmed Mean
Picking Random Rows
Handling Duplicates
Chapter 10. Inserting, Updating, and Deleting Rows
Displaying Table Definitions
Inserting Rows with INSERT
Updating Rows with UPDATE
Deleting Rows with DELETE
Chapter 11. Creating, Altering, and Dropping Tables
Creating Tables
Understanding Constraints
Creating a New Table with CREATE TABLE
Forbidding Nulls with NOT NULL
Specifying a Default Value with DEFAULT
Specifying a Primary Key with PRIMARY KEY
Specifying a Foreign Key with FOREIGN KEY
Forcing Unique Values with UNIQUE
Adding a Check Constraint with CHECK
Creating a Temporary Table with CREATE TEMPORARY TABLE
Creating a New Table from an Existing One with CREATE TABLE AS
Altering a Table with ALTER TABLE
Dropping a Table with DROP TABLE
Chapter 12. Indexes
Creating an Index with CREATE INDEX
Dropping an Index with DROP INDEX
Chapter 13. Views
Creating a View with CREATE VIEW
Retrieving Data Through a View
Updating Data Through a View
Dropping a View with DROP VIEW
Chapter 14. Transactions
Executing a Transaction
Appendix A. Creating the Sample Database
Creating the Sample Database
Appendix B. SQL Keywords

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