Property talk:P2237
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{{Property documentation |infobox parameter = display in [[Template:Property documentation]] |domain = property with numbers |allowed values = items for units or {{Q|21027105}} |proposed by = 38 }}
All quantity properties should have P2237 (P2237) or type of unit for this property (P2876) (Help)
Violations query:
SELECT ?item WHERE { ?item wikibase:propertyType wikibase:Quantity . MINUS { ?item p:P2237 [] } . MINUS { ?item p:P2876 [] } }List of this constraint violations: Database reports/Complex constraint violations/P2237#No units specified
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It's more natural to use snaktype "no vales" for unit-less properties instead of special item, as shown in students count (P2196). The "not applicable" in a property documentation can be localized by Module:I18n/property documentation. -- Sergey kudryavtsev (talk) 13:12, 15 October 2015 (UTC)
- The problem with "no value" is that it's not necessarily clear for everyone what it means. Using an item allows it to be localized there. --- Jura 13:46, 15 October 2015 (UTC)
New scheme for constraints
Please see Property_talk:P2302#New_value_for_property:_allowed_units_constraint_.28Q21514353.29. --- Jura 20:44, 19 November 2015 (UTC)
Archived proposal?
@Jura1: Where is the archived proposal for this property? I can't find it on the page you linked. - Nikki (talk) 11:27, 13 April 2016 (UTC)
Regarding to multiple concepts
Dear, Do we have the concepts of multiple for a unit of measurements? for instances: thousand, million, billion, or trillion. These terms are commonly used when mentioning about money or population. Could we consider these as units of measurement? It is OK if I add thousand, million, and billion as a unit used for property P1082 (population). Phucnt.nii (talk) 09:32, 11 January 2018 (UTC)
Proposal for deletion
See Wikidata:Properties for deletion#units used for this property (P2237) where I have proposed deletion of this property, migrating across to use of property constraint (P2302) allowed units constraint (Q21514353) instead. Dhx1 (talk) 15:37, 16 April 2018 (UTC)