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XQuery Introduction
What Is XQuery?
Path Expressions
FLWOR (for, let, where, order by, return)
Functions
Joins
XQuery Basics
The Design of the XQuery Language
XQuery in Context
Processing Queries
The XQuery Data Model
Types
Namespaces
Expressions
Categories of Expressions
Keywords and Names
Whitespace in Queries
Literals
Variables
Function Calls
Comments
Evaluation Order
Comparison Expressions
"if-then-else" Expressions
"and/or" Expressions
Paths
Path Expressions
Predicates
Dynamic Paths
Input Documents
Context
Constructors
Including Elements and Attributes from the Input Document
Direct Constructors
Computed Constructors
Selecting and Joining Using FLWORs
Selecting with Path Expressions
FLWOR Expressions
Quantified Expressions
Selecting Distinct Values
Joins
Sorting and Grouping
Sorting in XQuery
Grouping
Aggregating Values
Functions
Built-in Functions
User-Defined Functions
Advanced Queries
Copying Input Elements with Modifications
Working with Positions and Sequence Numbers
Combining Results
Using Intermediate XML Documents
XML Namespace
XQuery and a Namespace
Namespace Declaration
Types
The XQuery Type System
The Built-in Types
Types, Nodes, and Atomic Values
Type Checking in XQuery
Automatic Type Conversions
Sequence Types
Constructors and Casting
Prolog and Module
Structure of a Query: Prolog and Body
Assembling Queries from Multiple Modules
Variable Declarations
Declaring External Functions
Using Schemas
What Is a Schema?
Why Use Schemas with Queries?
W3C XML Schema: A Brief Overview
In-Scope Schema Definitions
Schema Validation and Type Assignment
Sequence Types and Schemas
Static Typing
What Is Static Typing?
The Typeswitch Expression
The Treat Expression
Type Declarations
The zero-or-one, one-or-more, and exactly-one Functions
Principles of Query Design
Query Design:
Clarity
Modularity
Robustness
Error Handling
Performance
Numbers
Constructing and comparing Numeric Values
Arithmetic Operations
Functions on Numbers
Strings
xs:string Type
Constructing, comparing and manipulating Strings
Substrings, length
Concatenating and Splitting Strings
Whitespace
Internationalization
Regular Expressions
The Structure of a Regular Expression
Representing Individual Characters
Representing Any Character
Representing Groups of Characters
Character Class Expressions
Reluctant Quantifiers
Anchors
Back-References
Using Flags
Using Sub-Expressions with Replacement Variables
Date and Time Types
Extracting Components of Dates, Times, and Durations
Using Arithmetic Operators on Dates, Times, and Durations
The Date Component Types
Qualified Names
Working with Qualified Names
URIs, IDs
Other XML Components
Documents
Text Nodes
Comments
PI (Processing Instructions)
XML Entity
CDATA
XQuery-Related Standards
XML Serialization
XQueryX
XQuery Update Facility
Full-Text Search
XQJ - XQuery API for Java
Implementation-Specific Features
XML Version
Setting the Query Context
Option Declarations and Extension Expressions
Serialization Parameters
XQuery vs. SQL
XML Data vs. Relational Data
SQL Syntax vs. XQuery Syntax
SQL and XQuery
XQuery vs. XSLT
XQuery and XPath
XQuery vs. XSLT