Mastering Oracle SQL 2nd edition
Covers Oracle Database 10g
Paperback Engels 2004 9780596006327Samenvatting
The vast majority of Oracle SQL books discuss some syntax, provide the barest rudiments of using Oracle SQL, and perhaps include a few simple examples. It might be enough to pass a survey course, or give you some buzz words to drop in conversation with real Oracle DBAs. But if you use Oracle SQL on a regular basis, you want much more. You want to access the full power of SQL to write queries in an Oracle environment. You want a solid understanding of what's possible with Oracle SQL, creative techniques for writing effective and accurate queries, and the practical, hands-on information that leads to true mastery of the language. Simply put, you want useful, expert best practices that can be put to work immediately, not just non-vendor specific overview or theory.
Updated to cover the latest version of Oracle, Oracle 10g, this edition of the highly regarded 'Mastering Oracle SQL' has a stronger focus on technique and on Oracle's implementation of SQL than any other book on the market. It covers Oracle s vast library of built-in functions, the full range of Oracle SQL query-writing features, regular expression support, new aggregate and analytic functions, subqueries in the SELECT and WITH clauses, multiset union operators, enhanced support for hierarchical queries: leaf and loop detection, and the CONNECT_BY_ROOT operator, new partitioning methods (some introduced in Oracle9i Release 2), and the native XML datatype, XMLType.
'Mastering Oracle SQL, 2nd Edition' fills the gap between the sometimes spotty vendor documentation, and other books on SQL that just don't explore the full depth of what is possible with Oracle-specific SQL. For those who want to harness the untapped (and often overlooked) power of Oracle SQL, this essential guide for putting Oracle SQL to work will prove invaluable.
Specificaties
Lezersrecensies
Inhoudsopgave
1. Introduction to SQL
What Is SQL?
A Brief History of SQL
A Simple Database
DML Statements
So Why Are There 17 More Chapters?
2. The WHERE Clause
Life Without WHERE
WHERE to the Rescue
WHERE Clause Evaluation
Conditions and Expressions
WHERE to Go from Here
3. Joins
What Is a Join Query?
Join Conditions
Types of Joins
Joins and Subqueries
DML Statements on a Join View
4. Group Operations
Aggregate Functions
The GROUP BY Clause
The HAVING Clause
Nested Group Operations
5. Subqueries
What Is a Subquery?
Noncorrelated Subqueries
Correlated Subqueries
Inline Views
Subquery Case Study: The Top N Performers
6. Handling Temporal Data
Time Zones
Temporal Data Types in Oracle
Literals of Temporal Types
Getting Temporal Data In and Out of a Database
Date and Time Formats
Manipulating Temporal Data
7. Set Operations
Set Operators
Precedence of Set Operators
Comparing Two Tables
Using NULLs in Compound Queries
Rules and Restrictions on Set Operations
8. Hierarchical Queries
Representing Hierarchical Information
Simple Hierarchy Operations
Oracle SQL Extensions
Complex Hierarchy Operations
Restrictions on Hierarchical Queries
Enhancements in Oracle Database 10g
9. DECODE and CASE
DECODE, NULLIF, NVL, and NVL2
The Case for CASE
DECODE and CASE Examples
10. Partitioning
Partitioning Concepts
Partitioning Tables
Partitioning Indexes
Partitioning Methods
Specifying Partitions
Partition Pruning
11. PL/SQL
What Is PL/SQL?
Procedures, Functions, and Packages
Calling Stored Functions from Queries
Restrictions on Calling PL/SQL from SQL
Stored Functions in DML Statements
The SQL Inside Your PL/SQL
12. Objects and Collections
Object Types
Collection Types
Collection Instantiation
Querying Collections
Collection Unnesting
Collection Functions
Comparing Collections
Manipulating Collections
Multilevel Collections
13. Advanced Group Operations
Multiple Summary Levels
Pushing the GROUPING Envelope
The GROUPING_ID and GROUP_ID Functions
14. Advanced Analytic SQL
Analytic SQL Overview
Ranking Functions
Windowing Functions
Reporting Functions
Summary
15. SQL Best Practices
Know When to Use Specific Constructs
Avoid Unnecessary Parsing
Consider Literal SQL for Decision-Support Systems
16. XML
What Is XML?
Storing XML Data
Generating XML Documents
Summary
17. Regular Expressions
Elementary Regular Expression Syntax
Advanced Function Options
Advanced Regular Expression Syntax
18. Model Queries
Basic Elements of a Model Query
Cell References
Rules
Iterative Models
Reference Models
Appendix: Oracle's Old Join Syntax
Index
Rubrieken
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- personeelsmanagement
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- projectmanagement
- psychologie
- reclame en verkoop
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- werk en loopbaan