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1 Introduction
2 Basics
    2.1 Expression Context
        2.1.1 Static Context
        2.1.2 Dynamic Context
    2.2 Processing Model
        2.2.1 Data Model Generation
        2.2.2 Schema Import Processing
        2.2.3 Expression Processing
            2.2.3.1 Static Analysis Phase
            2.2.3.2 Dynamic Evaluation Phase
        2.2.4 Serialization
        2.2.5 Consistency Constraints
    2.3 Error Handling
        2.3.1 Kinds of Errors
        2.3.2 Identifying and Reporting Errors
        2.3.3 Handling Dynamic Errors
        2.3.4 Errors and Optimization
    2.4 Concepts
        2.4.1 Document Order
        2.4.2 Atomization
        2.4.3 Effective Boolean Value
        2.4.4 Input Sources
        2.4.5 URI Literals
    2.5 Types
        2.5.1 Predefined Schema Types
        2.5.2 Typed Value and String Value
        2.5.3 SequenceType Syntax
        2.5.4 SequenceType Matching
            2.5.4.1 Matching a SequenceType and a Value
            2.5.4.2 Matching an ItemType and an Item
            2.5.4.3 Element Test
            2.5.4.4 Schema Element Test
            2.5.4.5 Attribute Test
            2.5.4.6 Schema Attribute Test
    2.6 Comments
3 Expressions
    3.1 Primary Expressions
        3.1.1 Literals
        3.1.2 Variable References
        3.1.3 Parenthesized Expressions
        3.1.4 Context Item Expression
        3.1.5 Function Calls
    3.2 Path Expressions
        3.2.1 Steps
            3.2.1.1 Axes
            3.2.1.2 Node Tests
        3.2.2 Predicates
        3.2.3 Unabbreviated Syntax
        3.2.4 Abbreviated Syntax
    3.3 Sequence Expressions
        3.3.1 Constructing Sequences
        3.3.2 Filter Expressions
        3.3.3 Combining Node Sequences
    3.4 Arithmetic Expressions
    3.5 Comparison Expressions
        3.5.1 Value Comparisons
        3.5.2 General Comparisons
        3.5.3 Node Comparisons
    3.6 Logical Expressions
    3.7 Constructors
        3.7.1 Direct Element Constructors
            3.7.1.1 Attributes
            3.7.1.2 Namespace Declaration Attributes
            3.7.1.3 Content
            3.7.1.4 Boundary Whitespace
        3.7.2 Other Direct Constructors
        3.7.3 Computed Constructors
            3.7.3.1 Computed Element Constructors
            3.7.3.2 Computed Attribute Constructors
            3.7.3.3 Document Node Constructors
            3.7.3.4 Text Node Constructors
            3.7.3.5 Computed Processing Instruction Constructors
            3.7.3.6 Computed Comment Constructors
        3.7.4 In-scope Namespaces of a Constructed Element
    3.8 FLWOR Expressions
        3.8.1 For and Let Clauses
        3.8.2 Where Clause
        3.8.3 Order By and Return Clauses
        3.8.4 Example
    3.9 Ordered and Unordered Expressions
    3.10 Conditional Expressions
    3.11 Quantified Expressions
    3.12 Expressions on SequenceTypes
        3.12.1 Instance Of
        3.12.2 Typeswitch
        3.12.3 Cast
        3.12.4 Castable
        3.12.5 Constructor Functions
        3.12.6 Treat
    3.13 Validate Expressions
    3.14 Extension Expressions
4 Modules and Prologs
    4.1 Version Declaration
    4.2 Module Declaration
    4.3 Boundary-space Declaration
    4.4 Default Collation Declaration
    4.5 Base URI Declaration
    4.6 Construction Declaration
    4.7 Ordering Mode Declaration
    4.8 Empty Order Declaration
    4.9 Copy-Namespaces Declaration
    4.10 Schema Import
    4.11 Module Import
    4.12 Namespace Declaration
    4.13 Default Namespace Declaration
    4.14 Variable Declaration
    4.15 Function Declaration
    4.16 Option Declaration
5 Conformance
    5.1 Minimal Conformance
    5.2 Optional Features
        5.2.1 Schema Import Feature
        5.2.2 Schema Validation Feature
        5.2.3 Static Typing Feature
            5.2.3.1 Static Typing Extensions
        5.2.4 Full Axis Feature
        5.2.5 Module Feature
        5.2.6 Serialization Feature
    5.3 Data Model Conformance

Appendices

A XQuery Grammar
    A.1 EBNF
        A.1.1 Notation
        A.1.2 Extra-grammatical Constraints
        A.1.3 Grammar Notes
    A.2 Lexical structure
        A.2.1 Terminal Symbols
        A.2.2 Terminal Delimitation
        A.2.3 End-of-Line Handling
            A.2.3.1 XML 1.0 End-of-Line Handling
            A.2.3.2 XML 1.1 End-of-Line Handling
        A.2.4 Whitespace Rules
            A.2.4.1 Default Whitespace Handling
            A.2.4.2 Explicit Whitespace Handling
    A.3 Reserved Function Names
    A.4 Precedence Order
B Type Promotion and Operator Mapping
    B.1 Type Promotion
    B.2 Operator Mapping
C Context Components
    C.1 Static Context Components
    C.2 Dynamic Context Components
    C.3 Serialization Parameters
D Implementation-Defined Items
E References
    E.1 Normative References
    E.2 Non-normative References
    E.3 Background Material
F Error Conditions
G The application/xquery Media Type
    G.1 Introduction
    G.2 Registration of MIME Media Type application/xquery
        G.2.1 Interoperability Considerations
        G.2.2 Applications Using this Media Type
        G.2.3 File Extensions
        G.2.4 Intended Usage
        G.2.5 Author/Change Controller
    G.3 Encoding Considerations
    G.4 Recognizing XQuery Files
    G.5 Charset Default Rules
    G.6 Security Considerations
H Glossary (Non-Normative)
I Example Applications (Non-Normative)
    I.1 Joins
    I.2 Grouping
    I.3 Queries on Sequence
    I.4 Recursive Transformations
    I.5 Selecting Distinct Combinations
J Revision Log (Non-Normative)