Property talk:P4521

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Radio Radicale person ID
identifier for a person in the database of Radio Radicale

Associated item	Radio Radicale (Q3928795)
Data type	External identifier
Corresponding template	no label (Q20829098)
Domain	According to this template: human (Q5) According to statements in the property: human (Q5) When possible, data should only be stored as statements
Allowed values	\d+
Example	Carlo Azeglio Ciampi (Q1224) → 17588 Marco Pannella (Q47651) → 86
External links	Use in sister projects: [ar] • [de] • [en] • [es] • [fr] • [he] • [it] • [ja] • [ko] • [nl] • [pl] • [pt] • [ru] • [sv] • [vi] • [zh] • [commons] • [species] • [wd] • [en.wikt] • [fr.wikt].
Formatter URL	https://www.radioradicale.it/soggetti/$1
Robot and gadget jobs	Automatic import
Tracking: usage	Category:Pages using Wikidata property P4521 (Q50823490)
Related to country	Italy (Q38) (See 397 others)
See also	Radio Radicale organizer ID (P4339), eska.pl topic ID (P7185), RMF FM artist ID (P7190), RauteMusik artist ID (P7198), Vox FM artist ID (P7218)
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties Items with no other external identifier Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Chart by item creation date Map of people by place values: place of birth educated at work location residence place of death place of burial January 1st dates People with date of birth on January 1 People with date of death on January 1 People with both dates on January 1 Database reports/Constraint violations/P4521 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 4,350 Main statement 4,347 >99.9% of uses Qualifier 2 <0.1% of uses Reference 1 <0.1% of uses
Search for values

[create Create a translatable help page (preferably in English) for this property to be included here]

Single value: this property generally contains a single value. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P4521#Single value, SPARQL

Distinct values: this property likely contains a value that is different from all other items. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P4521#Unique value, SPARQL (every item), SPARQL (by value)

Format “\d+|”: value must be formatted using this pattern (PCRE syntax). (Help)

List of violations of this constraint: Database reports/Constraint violations/P4521#Format, hourly updated report, SPARQL

Type “human (Q5)”: item must contain property “instance of (P31)” with classes “human (Q5)” or their subclasses (defined using subclass of (P279)). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P4521#Type Q5, SPARQL

Allowed entity types are Wikibase item (Q29934200): the property may only be used on a certain entity type (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P4521#Entity types

Scope is as main value (Q54828448), as reference (Q54828450): the property must be used by specified way only (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P4521#Scope, SPARQL

Label required in languages: it: Entities using this property should have labels in one of the following languages: it (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P4521#Label in 'it' language, search, SPARQL

This property is being used by: it:Template:Collegamenti esterni, it:Template:Radio Radicale Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)

Duplicate values with different labels

SELECT ?soggetto ?soggettoLabel
(GROUP_CONCAT(DISTINCT ?id; separator=", ") as ?id_multipli)
(GROUP_CONCAT(DISTINCT ?titolo; separator=", ") as ?titoli)
(COUNT(?soggetto) as ?numero)
WHERE {
  ?soggetto wdt:P4521 ?id . 
  ?soggetto p:P4521 ?d . 
  ?d pq:P1810 ?titolo .
  SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],it". }
}
GROUP BY ?soggetto ?soggettoLabel
HAVING(count(?id) > 1)
ORDER BY DESC(?numero)

Try it!

--Epìdosis 17:16, 22 August 2019 (UTC)