format as a regular expression

regex describing an identifier or a Wikidata property. When using on property constraints, ensure syntax is a PCRE
rdfs:label
"format as a regular expression"@en
skos:altLabel
"allowed values"@en
"regex"@en
"regexp"@en
"regular expression"@en
schema:description
"regex describing an identifier or a Wikidata property. When using on property constraints, ensure syntax is a PCRE"@en
schema:dateModified "2026-10-18T23:06:58+00:00"^^xsd:dateTime
schema:version 2558552195
wikibase:claim p:P1793
wikibase:directClaim wdt:P1793
wikibase:novalue p:novalue/P1793
wikibase:propertyType wikibase:String
wikibase:qualifier p:qualifier/P1793
wikibase:qualifierValue p:qualifier/value/P1793
wikibase:reference p:reference/P1793
wikibase:referenceValue p:reference/value/P1793
wikibase:statementProperty p:statement/P1793
wikibase:statementValue p:statement/value/P1793
wikibase:statements 34
p:P1629 wd:statement/P1793-14996e33-4feb-0c12-938f-23994e640edd
p:P1630 wd:statement/P1793-822032e6-44cd-8470-31c9-8202227b0449
wd:statement/P1793-9934cc42-4581-3d2b-591e-9936c51403f4
wd:statement/P1793-9ccd6087-45c2-36f1-a02c-5360a59a81ff
p:P1659 wd:statement/P1793-1849fdec-4b56-be17-cfe4-fbf3231c993d
wd:statement/P1793-2c441b86-4d9d-3f29-6f15-645e28216865
wd:statement/P1793-4cac47b8-41a5-e8d9-d6d8-c7092dda425b
wd:statement/P1793-a4999800-4010-4db8-fa79-f52d37c74fe0
wd:statement/P1793-bc35b6cb-4409-a0d3-9bf0-02d297f3bada
p:P1855 wd:statement/P1793-17ef10c5-44c4-ea5f-096d-f0a36f39f8b4
wd:statement/P1793-f09a6930-4457-68b2-e8fe-a6d448da4118
p:P2271 wd:statement/P1793-cb2781ae-4350-ac9c-5ba2-54c1410f84b9
wd:statement/P1793-f483b394-488e-da73-7866-5ba0afc2fd3a
p:P2302 wd:statement/P1793-0386a723-4ce6-3c8c-1e91-c03e4e57ca2f
wd:statement/P1793-33c582de-4359-20f6-6449-38c45376169b
wd:statement/P1793-4bc85e72-4b1a-c74a-eb07-3f5115c444b0
wd:statement/P1793-50E6DC45-21B5-4FB7-A7E6-145B404E6F62
wd:statement/P1793-8426B0D2-0544-4FF3-A477-4725423521B2
wd:statement/P1793-ab8e6e6d-4acc-c5e6-41b9-79d86260dbd9
wd:statement/P1793-c8fe9bcc-4ec0-464d-dbef-b9a09fabf477
wd:statement/P1793-ca0daf68-4f16-bb87-5730-100ac2bff266
wd:statement/P1793-f2afb9bf-4496-208d-6a97-9fb50e332229
p:P2559 wd:statement/P1793-758615ab-44e9-a795-ad64-fd3967121c6a
wd:statement/P1793-76edb5c6-47e3-e9ec-35fd-f95cd5368f2e
p:P2668 wd:statement/P1793-808539bc-437e-80a3-6c65-9800448b181b
p:P2910 wd:statement/P1793-580b19fb-44cc-7d1c-6da5-0dfc47726790
p:P31 wd:statement/P1793-3d9da2ed-4179-ecf4-6cd9-8e042004e3bb
wd:statement/P1793-4c4bba6e-4a13-c7c0-ced5-7d4d295adc1f
wd:statement/P1793-61464bba-4ef8-3e3d-db8f-a4ed186a5c45
wd:statement/P1793-9d5cae86-4636-d6cf-f125-6af5cbd7c9c3
p:P3254 wd:statement/P1793-3E39E758-1757-4F27-BD81-26D8E7CE9AFD
p:P4354 wd:statement/P1793-e3e15771-46cd-5733-74e2-abf54e7e4aef
p:P6104 wd:statement/P1793-67754897-4d4d-f4ee-0fcf-aa807aca11bb
p:P973 wd:statement/P1793-b2473618-42fb-fcfa-326d-34829ba60e91
wdt:P1629 regular expression
wdt:P1630 "http://regexr.com/?expression=/$1/g&engine=pcre&tool=explain"
wdt:P1659 syntax clarification
regular expression syntax
applies if regular expression matches
format as language specific regular expression
Smithsonian trinomial format regex
wdt:P1855 NTFS
ISO 639-3
wdt:P2271 IMDb ID
Laws & Regulations Database of the Republic of China ID
wdt:P2302 single-value constraint
format constraint
subject type constraint
allowed qualifiers constraint
allowed-entity-types constraint
property scope constraint
wdt:P2559
"When used in property constraint, it should contain PCRE2 regular expression, treated as "full match". For example, "(?i)[a-z]+|\d+|" means that validated string should match /^(?:[a-z]+|\d+)$/i or be set to "no value" or "unknown value""@en
wdt:P2668 sometimes changes
wdt:P2910 <http://commons.wikimedia.org/wiki/Special:FilePath/Pictogram%20voting%20regex.svg>
wdt:P31 Wikidata property related to classification schemes
Wikidata property for an identifier
Wikidata property with datatype string that is not an external identifier
Wikidata property to indicate a constraint
wdt:P3254 <https://www.wikidata.org/wiki/Wikidata:Property_proposal/Archive/29#P1793>
wdt:P6104 WikiProject Property constraints
wdt:P973 <https://www.pcre.org/current/doc/html/>
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