Difference between revisions of "Querying"
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==Functions== | ==Functions== | ||
| − | * [[Database Functions|Database]] | + | * [[Database Functions|Database]]: Database-related functions<br />Prefix: <tt>db</tt>; URI: <tt><nowiki>http://basex.org/db</nowiki></tt> |
| − | * [[Full-text Functions|Full Text]] | + | * [[Full-text Functions|Full Text]]: Full-text functions<br />Prefix: <tt>ft</tt>; URI: <tt><nowiki>http://basex.org/ft</nowiki></tt> |
| − | * [[Utility Functions]] | + | * [[Utility Functions]]: Testing and profiling functions<br />Prefix: <tt>util</tt>; URI: <tt><nowiki>http://basex.org/util</nowiki></tt> |
| − | + | * [[File Functions]]: functions for file handling<br />Prefix: <tt>file</tt>; URI: <tt><nowiki>http://basex.org/file</nowiki></tt> | |
| − | * [[File Functions]] | + | * [[HTTP Functions]] (<tt>http</tt>): Full-text functions, based on the [http://expath.org/spec/http-client EXPath HTTP Client Module]<br />Prefix: <tt>http</tt>; URI: <tt><nowiki>http://expath.org/ns/http-client</nowiki></tt> |
| − | * [[HTTP Functions]] (<tt>http</tt>): Full-text functions, based on the [http://expath.org/spec/http-client EXPath HTTP Client Module] | + | * [[Math Functions]]: functions for mathematical operations, extending the official W3C Recommendation<br />Prefix: <tt>math</tt>; URI: <tt><nowiki>http://www.w3.org/2005/xpath-functions/math</nowiki></tt> |
| + | Note that all namespace URIs are statically bound in BaseX, i.e., they need not be declared in the query prolog. | ||
A complete list of the standard XQuery 3.0 functions is found in the [http://www.w3.org/TR/xpath-functions-30/ Official W3C Specification]. | A complete list of the standard XQuery 3.0 functions is found in the [http://www.w3.org/TR/xpath-functions-30/ Official W3C Specification]. | ||
Revision as of 19:10, 21 January 2011
Welcome to the Query Portal, which is one of the main sections of the documentation. Here your find more information on performing XPath and XQuery requests. Apart from standard features, BaseX offers numerous extensions, which are listed on this page.
Extensions
- Full-Text: full-text features of XQuery
- Update: update mechanism of XQuery
- Java Bindings: how to call Java methods from XQuery
- XQuery 3.0: supported features of the upcoming W3C XQuery 3.0 Recommendation
Functions
- Database: Database-related functions
Prefix: db; URI: http://basex.org/db - Full Text: Full-text functions
Prefix: ft; URI: http://basex.org/ft - Utility Functions: Testing and profiling functions
Prefix: util; URI: http://basex.org/util - File Functions: functions for file handling
Prefix: file; URI: http://basex.org/file - HTTP Functions (http): Full-text functions, based on the EXPath HTTP Client Module
Prefix: http; URI: http://expath.org/ns/http-client - Math Functions: functions for mathematical operations, extending the official W3C Recommendation
Prefix: math; URI: http://www.w3.org/2005/xpath-functions/math
Note that all namespace URIs are statically bound in BaseX, i.e., they need not be declared in the query prolog. A complete list of the standard XQuery 3.0 functions is found in the Official W3C Specification.
Indexes
Queries will be analyzed and optimized for index access on the fly.
- Overview: All indexes and their functionality
- Execution Plan: Execution plans of the queries
