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SPARQLOptional

[Experimental]

SPARQLOptional[patt]

represents part of a pattern that does not need to match in order for the whole pattern to match.

Details and Options

  • In SPARQLOptional[patt], patt can take the same form as in SPARQLSelect[patt].

Examples

Basic Examples  (1)Summary of the most common use cases

In[1]:=1
✖
https://wolfram.com/xid/0cy7ex2uhi052ivh8byuvfg-zeyh9b

Data about fruits:

In[2]:=2
✖
https://wolfram.com/xid/0cy7ex2uhi052ivh8byuvfg-62gleg
In[3]:=3
✖
https://wolfram.com/xid/0cy7ex2uhi052ivh8byuvfg-6jbqjl

Find the color and optionally the shape of fruits:

In[4]:=4
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https://wolfram.com/xid/0cy7ex2uhi052ivh8byuvfg-yfnvq7
Out[4]=4
Wolfram Research (2019), SPARQLOptional, Wolfram Language function, https://reference.wolfram.com/language/GraphStore/ref/SPARQLOptional.html.
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Wolfram Research (2019), SPARQLOptional, Wolfram Language function, https://reference.wolfram.com/language/GraphStore/ref/SPARQLOptional.html.

Text

Wolfram Research (2019), SPARQLOptional, Wolfram Language function, https://reference.wolfram.com/language/GraphStore/ref/SPARQLOptional.html.

✖
Wolfram Research (2019), SPARQLOptional, Wolfram Language function, https://reference.wolfram.com/language/GraphStore/ref/SPARQLOptional.html.

CMS

Wolfram Language. 2019. "SPARQLOptional." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/GraphStore/ref/SPARQLOptional.html.

✖
Wolfram Language. 2019. "SPARQLOptional." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/GraphStore/ref/SPARQLOptional.html.

APA

Wolfram Language. (2019). SPARQLOptional. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/GraphStore/ref/SPARQLOptional.html

✖
Wolfram Language. (2019). SPARQLOptional. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/GraphStore/ref/SPARQLOptional.html

BibTeX

@misc{reference.wolfram_2025_sparqloptional, author="Wolfram Research", title="{SPARQLOptional}", year="2019", howpublished="\url{https://reference.wolfram.com/language/GraphStore/ref/SPARQLOptional.html}", note=[Accessed: 01-April-2025 ]}

✖
@misc{reference.wolfram_2025_sparqloptional, author="Wolfram Research", title="{SPARQLOptional}", year="2019", howpublished="\url{https://reference.wolfram.com/language/GraphStore/ref/SPARQLOptional.html}", note=[Accessed: 01-April-2025 ]}

BibLaTeX

@online{reference.wolfram_2025_sparqloptional, organization={Wolfram Research}, title={SPARQLOptional}, year={2019}, url={https://reference.wolfram.com/language/GraphStore/ref/SPARQLOptional.html}, note=[Accessed: 01-April-2025 ]}

✖
@online{reference.wolfram_2025_sparqloptional, organization={Wolfram Research}, title={SPARQLOptional}, year={2019}, url={https://reference.wolfram.com/language/GraphStore/ref/SPARQLOptional.html}, note=[Accessed: 01-April-2025 ]}