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Group By clause in FLWOR expression.
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None.
|
Substantive.
|
A new clause was added to the FLWOR expression to allow query writers
to cause groups of tuples to be created based on the values of
some expression.
|
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Window clause in FLWOR expression.
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None.
|
Substantive.
|
A new clause was added to the FLWOR expression to allow query writers
to create sliding and tumbling windows of tuples based on a number
of criteria.
|
|
Simplification of FLWOR expression.
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None.
|
Substantive.
|
The syntax of the FLWOR expression was considerably relaxed, permitting
most clauses (other than the return clause) to be used at almost any
position (only a few clauses are allowed to be the first clause)
within a FLWOR expression.
|
|
Outer for supported in FLWOR expressions.
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None.
|
Substantive.
|
The syntax of the for clause in FLWOR expressions was extended
to allow the use of "outer for".
|
|
Count clause in FLWOR expression.
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None.
|
Substantive.
|
A new clause was added to the FLWOR expression to allow query writers
to capture the total number of items that are returned by a (portion of a)
FLWOR expression.
|
|
Declaration of decimal number formats.
|
None.
|
Substantive.
|
A new option was added to the query prologue, allowing query authors to
specify a named (or an unnamed default) format for decimal numbers.
This allows the specification of such items as the decimal separator,
the minus sign, the percent and per mille signs, and even the class
of Unicode digits.
|
|
Query version and encoding declaration.
|
None.
|
Substantive.
|
Allows specification of either or both of the version of XQuery to which a
query adheres and the encoding of the query (e.g., UTF8, ISO8859-1).
|
|
Enhanced validation expression.
|
[XQuery 1.1] Requirement: validation by type
|
Substantive.
|
Permits query authors to validate an expression against a specified XML Schema type.
|
|
Nondeterministic external functions.
|
None.
|
Substantive.
|
Functions declared to be external functions can also be
specified to be deterministic or nondeterministic.
|
|
Syntax used to provide default value for external variables.
|
None.
|
Minor.
|
The declaration of external variables now uses ":=" to indicate the
default value given to such variables, instead of the keyword "default".
|
|
Try/catch for error handling.
|
None.
|
Substantive.
|
A try/catch facility is provided that allows query authors to control
how errors are handled when raised by evaluation of queries.
|
|
Context item declaration.
|
None.
|
Substantive.
|
It is now possible to declare both the type of and the default initial value of
the context item of a query, and to specify whether its value may be provided
by the external environment.
|
|
Computed namespace constructor.
|
None.
|
Substantive.
|
Added new complex type and element to XQueryX schema, and new template to XQueryX stylesheet,
in support of computed namespace constructors in XQuery 1.1.
|
|
Generate proper syntax for variable names in positional variable bindings.
|
[XQX30] template for positionalVariableBinding
|
Substantive.
|
Modified XQueryX stylesheet template to correctly generate a "$" preceding the variable name.
|
|
Allow positional variable bindings to be optional in window variables.
|
[XQX30] positionalVariableBinding should be optional in windowVars
|
Substantive.
|
Modified XQueryX schema to add minOccurs="0" on element positionalVariableBinding in windowVars complex type definition.
|
|
XQueryX syntax must allow wildcards in the try/catch error list.
|
[XQX30] cannot represent a catchErrorList wildcard in XQueryX
|
Substantive.
|
In XQueryX schema, modified catchErrorList complex type definition to allow a choice between a nameText (essentially a QName) and a Wildcard.
In XQueryX stylesheet, modified catchErrorList template to support Wildcard as well as nameText.
|
|
Private functions.
|
None.
|
Substantive.
|
In XQueryX schema, added new attribute "private" in functionDecl complex type.
In XQUeryX stylesheet, template for functionDecl, added support for @private (generate "private" for private functions and "public" for others)
|
|
Replace "outer for" with "allowing empty".
|
None.
|
Substantive.
|
In XQueryX schema, forClause complex type, delete attribute "outer"; in forClauseItem complex type, add new element allowingEmpty.
In XQueryX stylesheet template for forClause, remove generation of "outer"; in template for forClauseItem, generate "allowing empty".
|
|
Higher-order functions.
|
None.
|
Substantive.
|
Made changes to XQueryX schema and stylesheet corresponding to new higher-order function syntax in XQuery 1.1.
|
|
New "switch" expression ("value switch", analogous to typeswitch).
|
None.
|
Substantive.
|
Made changes to XQueryX schema and stylesheet corresponding to new switch syntax in XQuery 3.0.
|
|
Support for partial function application.
|
None.
|
Substantive.
|
Made changes to XQueryX schema and stylesheet to support the partial function application capability of XQuery 3.0.
|
| XML Schema and XSLT Stylesheet |
lack of syntactic symmetry
between the control flow expressions
| Substantive. | Eliminated the possibility of defining three "error variables" as part of the catch clause; those
variables (and others) are now implicitly defined, and may be used without explicit definition.
At the same time, fixed a bug in the schema and stylesheet that recognized and produced invalid
syntax for the validation expression. |