Special property "Query duration"

From semantic-mediawiki.org
Query duration
Holds the value of the duration a query took to execute
Further Information
Provided by: extension "Semantic MediaWiki "Semantic MediaWiki (SMW) is a free, open-source extension to MediaWiki that lets you store and query data within the wiki's pages. Semantic MediaWiki is also a full-fledged framework, in conjunction with many spinoff extensions, that can turn a wiki into a powerful and flexible knowledge management system. All data created within SMW can easily be published via the Semantic Web, allowing other systems to use this data seamlessly.
Added: 1.9.0
Removed: still in use
Alias: has no alias
Optional: yes
Visible: yes
Annotable: no
Declarative: no
Key:
_ASKDU
Setting: not specified
Focus: query information
In this wiki: Property:Query duration

The Query depth property is a special property in Semantic MediaWiki with a built-in meaning: it holds the value of the duration a query took to execute. See the help page on how to query for queries for more details on how to use this special property. It is not possible to manually add a value to this special property. It was introduced with Semantic MediaWiki 1.9.0Released on 3 January 2014 and compatible with MW 1.19.0 - 1.22.x..1

By default the measurement of the execution time of a query is disabled. See the help page on configuration parameter $smwgQueryProfilerSets whether specific monitorable profile data are recorded for how to enable this.

See the property page Query duration to see which pages use this special property on this wiki.

Available special properties relating to query profiling

The following other special properties are available for query profiling:
NameDescriptionHelp pageAdded
Query sizeHolds the value of the number of conditions in a querySpecial property "Query size"1.8.0
Query stringHolds the conditions of the query as a stringSpecial property "Query string"1.8.0
Has queryLinks a page to the subobject created by a query recording its profileSpecial property "Has query"1.8.0
Query depthHolds the value of the property depth of a querySpecial property "Query depth"1.8.0
Query formatHolds the name of the result format used in a querySpecial property "Query format"1.8.0
Query parametersHolds the parameters a query used to select its outputSpecial property "Query parameters"2.5.0
Query sourceHolds the identifier of an alternative (e.g. remote) query sourceSpecial property "Query source"2.5.0
Query scodeHolds the status code a query uses to define its internal stateSpecial property "Query scode"3.0.0

See also

References

  1. ^  Semantic MediaWiki: GitHub pull request gh:smw:30