Help:Contributing/query - Revision history

SeedBot: Standardize: add copy button to block code snippets

2026-08-23T09:46:31Z

Standardize: add copy button to block code snippets

← Older revision		Revision as of 09:46, 23 August 2026
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	All books in the knowledge base:		All books in the knowledge base:

	<syntaxhighlight lang="sparql">		<syntaxhighlight lang="sparql" copy>
	SELECT ?book ?bookLabel WHERE {		SELECT ?book ?bookLabel WHERE {
	?book wdt:P1 wd:Q9 . # instance of (P1) → book (Q9)		?book wdt:P1 wd:Q9 . # instance of (P1) → book (Q9)

SeedBot: Rewrite in code-guide style: strip translation markup, `for plain tokens, link the SPARQL cheatsheet (via update-page on MediaWiki MCP Server)`


2026-08-19T17:26:14Z
Rewrite in code-guide style: strip translation markup, <code> for plain tokens, link the SPARQL cheatsheet (via update-page on MediaWiki MCP Server)

				
				
				
				
				
				← Older revision
				Revision as of 17:26, 19 August 2026
				
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<languages/> This page shows how to query the knowledge base with SPARQL. Start at the [[Help:Contributing]] hub if you are new here.



<translate> == The endpoint ==
<!--T:1--> 
This page shows how to query the knowledge base with SPARQL. Start at the <tvar name="hub">[[Help:Contributing]]</tvar> hub if you are new here. 
</translate> 



== <translate><!--T:2--> The endpoint</translate> == The public SPARQL endpoint is <code>https://wikibase.ronzz.org/sparql</code>.



<translate> == A first query ==
<!--T:3--> 
The public SPARQL endpoint is <tvar name="ep"><syntaxhighlight lang="text" inline>https://wikibase.ronzz.org/sparql</syntaxhighlight></tvar>. 
</translate> 



== <translate><!--T:4--> A first query</translate> == 

<translate> 
<!--T:5--> 
All books in the knowledge base: All books in the knowledge base:
</translate> 



<syntaxhighlight lang="sparql"> <syntaxhighlight lang="sparql">
Line 27:
Line 16:
</syntaxhighlight> </syntaxhighlight>



<translate> The <code>wdt:</code> prefix reads the values of a property; <code>wd:</code> names an entity. On this instance, <code>instance of</code> is <code>P1</code> and <code>book</code> is <code>Q9</code>.
<!--T:6--> 
The <tvar name="wdt"><syntaxhighlight lang="text" inline>wdt:</syntaxhighlight></tvar> prefix reads the values of a property; <tvar name="wd"><syntaxhighlight lang="text" inline>wd:</syntaxhighlight></tvar> names an entity. On this instance, <tvar name="p1"><syntaxhighlight lang="text" inline>instance of</syntaxhighlight></tvar> is <tvar name="pid"><syntaxhighlight lang="text" inline>P1</syntaxhighlight></tvar> and <tvar name="book"><syntaxhighlight lang="text" inline>book</syntaxhighlight></tvar> is <tvar name="qid"><syntaxhighlight lang="text" inline>Q9</syntaxhighlight></tvar>. 
</translate> 



<translate> The [https://www.wikidata.org/wiki/Wikidata:SPARQL_tutorial Wikidata SPARQL tutorial] works verbatim on this instance. For the full syntax reference, see [[Cheatsheets:SPARQL]].
<!--T:7--> 
The [https://www.wikidata.org/wiki/Wikidata:SPARQL_tutorial Wikidata SPARQL tutorial] works verbatim on this instance. 
</translate> 



== <translate><!--T:8--> See also</translate> == == See also ==



<translate> * [[Help:Contributing]] — the hub
<!--T:9--> 
* <tvar name="hub">[[Help:Contributing]]</tvar> — the hub 
* [https://www.w3.org/TR/sparql11-query/ SPARQL 1.1 specification] (official) * [https://www.w3.org/TR/sparql11-query/ SPARQL 1.1 specification] (official)
</translate>



SeedBot: docs: migrate contribution guide §9 (querying) from docs/contribution-guide.md (via create-page on MediaWiki MCP Server)
2026-08-19T10:03:41Z
docs: migrate contribution guide §9 (querying) from docs/contribution-guide.md (via create-page on MediaWiki MCP Server)
New page
<languages/>



<translate>

<!--T:1-->

This page shows how to query the knowledge base with SPARQL. Start at the <tvar name="hub">[[Help:Contributing]]</tvar> hub if you are new here.

</translate>



== <translate><!--T:2--> The endpoint</translate> ==



<translate>

<!--T:3-->

The public SPARQL endpoint is <tvar name="ep"><syntaxhighlight lang="text" inline>https://wikibase.ronzz.org/sparql</syntaxhighlight></tvar>.

</translate>



== <translate><!--T:4--> A first query</translate> ==



<translate>

<!--T:5-->

All books in the knowledge base:

</translate>



<syntaxhighlight lang="sparql">

SELECT ?book ?bookLabel WHERE {

  ?book wdt:P1 wd:Q9 .            # instance of (P1) → book (Q9)

  SERVICE wikibase:label { bd:serviceParam wikibase:language "en". }

}

</syntaxhighlight>



<translate>

<!--T:6-->

The <tvar name="wdt"><syntaxhighlight lang="text" inline>wdt:</syntaxhighlight></tvar> prefix reads the values of a property; <tvar name="wd"><syntaxhighlight lang="text" inline>wd:</syntaxhighlight></tvar> names an entity. On this instance, <tvar name="p1"><syntaxhighlight lang="text" inline>instance of</syntaxhighlight></tvar> is <tvar name="pid"><syntaxhighlight lang="text" inline>P1</syntaxhighlight></tvar> and <tvar name="book"><syntaxhighlight lang="text" inline>book</syntaxhighlight></tvar> is <tvar name="qid"><syntaxhighlight lang="text" inline>Q9</syntaxhighlight></tvar>.

</translate>



<translate>

<!--T:7-->

The [https://www.wikidata.org/wiki/Wikidata:SPARQL_tutorial Wikidata SPARQL tutorial] works verbatim on this instance.

</translate>



== <translate><!--T:8--> See also</translate> ==



<translate>

<!--T:9-->

* <tvar name="hub">[[Help:Contributing]]</tvar> — the hub

* [https://www.w3.org/TR/sparql11-query/ SPARQL 1.1 specification] (official)

</translate>

← Older revision		Revision as of 17:26, 19 August 2026
Line 1:		Line 1:
	~~<languages/>~~		This page shows how to query the knowledge base with SPARQL. Start at the [[Help:Contributing]] hub if you are new here.

	~~<translate>~~		== The endpoint ==
	~~<!--T:1-->~~
	~~This page shows how to query the knowledge base with SPARQL. Start at the <tvar name~~=~~"hub">[[Help:Contributing]]</tvar> hub if you are new here.~~
	~~</translate>~~

	== <~~translate~~>~~<!--T~~:~~2--> The endpoint~~</~~translate~~> ==		The public SPARQL endpoint is <code>https://wikibase.ronzz.org/sparql</code>.

	~~<translate>~~		== A first query ==
	~~<!--T:3-->~~
	~~The public SPARQL endpoint is <tvar name~~=~~"ep"><syntaxhighlight lang~~=~~"text" inline>https://wikibase.ronzz.org/sparql</syntaxhighlight></tvar>.~~
	~~</translate>~~

	~~== <translate><!--T:4--> A first query</translate> ==~~

	~~<translate>~~
	~~<!--T:5-->~~
	All books in the knowledge base:		All books in the knowledge base:
	~~</translate>~~

	<syntaxhighlight lang="sparql">		<syntaxhighlight lang="sparql">
Line 27:		Line 16:
	</syntaxhighlight>		</syntaxhighlight>

	~~<translate>~~		The <code>wdt:</code> prefix reads the values of a property; <code>wd:</code> names an entity. On this instance, <code>instance of</code> is <code>P1</code> and <code>book</code> is <code>Q9</code>.
	~~<!--T:6-->~~
	The <~~tvar name="wdt"><syntaxhighlight lang="text" inline~~>wdt:</~~syntaxhighlight></tvar~~> prefix reads the values of a property; <~~tvar name="wd"><syntaxhighlight lang="text" inline~~>wd:</~~syntaxhighlight></tvar~~> names an entity. On this instance, <~~tvar name="p1"><syntaxhighlight lang="text" inline~~>instance of</~~syntaxhighlight></tvar~~> is <~~tvar name="pid"><syntaxhighlight lang="text" inline~~>P1</~~syntaxhighlight></tvar~~> and <~~tvar name="book"><syntaxhighlight lang="text" inline~~>book</~~syntaxhighlight></tvar~~> is <~~tvar name="qid"><syntaxhighlight lang="text" inline~~>Q9</~~syntaxhighlight></tvar~~>.
	~~</translate>~~

	~~<translate>~~		The [https://www.wikidata.org/wiki/Wikidata:SPARQL_tutorial Wikidata SPARQL tutorial] works verbatim on this instance. For the full syntax reference, see [[Cheatsheets:SPARQL]].
	~~<!--T:7-->~~
	The [https://www.wikidata.org/wiki/Wikidata:SPARQL_tutorial Wikidata SPARQL tutorial] works verbatim on this instance.
	~~</translate>~~

	== ~~<translate><!--T:8-->~~ See also~~</translate>~~ ==		== See also ==

	~~<translate>~~		* [[Help:Contributing]] — the hub
	~~<!--T:9-->~~
	* ~~<tvar name="hub">~~[[Help:Contributing]]~~</tvar>~~ — the hub
	* [https://www.w3.org/TR/sparql11-query/ SPARQL 1.1 specification] (official)		* [https://www.w3.org/TR/sparql11-query/ SPARQL 1.1 specification] (official)
	~~</translate>~~

Help:Contributing/query - Revision history

SeedBot: Standardize: add copy button to block code snippets

SeedBot: Rewrite in code-guide style: strip translation markup, for plain tokens, link the SPARQL cheatsheet (via update-page on MediaWiki MCP Server)

SeedBot: docs: migrate contribution guide §9 (querying) from docs/contribution-guide.md (via create-page on MediaWiki MCP Server)

SeedBot: Rewrite in code-guide style: strip translation markup, `for plain tokens, link the SPARQL cheatsheet (via update-page on MediaWiki MCP Server)`