XQuery Basics

This section describes the fundamentals of XQuery.

In This Section

• Sequence and QNames (XQuery)
  Describes sequence and also QNames and predefined namespaces.

• Expression Context and Query Evaluation (XQuery)
  Describes the two contexts in which XQuery is evaluated. These two contexts are static and dynamic.

• Atomization (XQuery)
  Describes atomization, which is a process of extracting the typed value of an item.

• Effective Boolean Value (XQuery)
  Describes the effective Boolean value. This value can be computed for expressions that return a single Boolean value, a node sequence, or an empty sequence.

• Type System (XQuery)
  Describes the XQuery type system with various predefined types. XQuery is a strongly typed language for schema types and a weakly typed language for untyped data.

• Error Handling (XQuery)
  Describes the handling of static, dynamic, and type errors in XQuery.

• Comments in XQuery
  Describes how to add comments in XQuery by using the "(:" and ":)" delimiters

• XQuery and Static Typing
  Describes XQuery in SQL Server as a statically typed language

See Also

Other Resources

XQuery Language Reference (Database Engine)