Property talk:P7400

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LibraryThing author ID
identifier for an author on the LibraryThing website

Applicable "stated in" value	LibraryThing (Q742640)
Data type	External identifier
Allowed values	[a-z0-9-]+
Example	Emma Wotton De Long (Q64070601) → longemmajde Charles Dickens (Q5686) → dickenscharles-1 Peter Joseph Capelotti (Q55944213) → capelottipj
Source	https://www.librarything.com/librarything_author.php
Formatter URL	https://www.librarything.com/author/$1 https://www.librarything.nl/author/$1
See also	LibraryThing work ID (P1085), LibraryThing series ID (P8513), LibraryThing venue ID (P8838)
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 Mix'n'match (Report) Database reports/Constraint violations/P7400 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 17,587 Main statement 17,532 out of 19,118 (92% complete) 99.7% of uses Qualifier 3 <0.1% of uses Reference 52 0.3% of uses
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[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/P7400#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/P7400#Unique value, SPARQL (every item), SPARQL (by value)

Conflicts with “instance of (P31): Wikimedia category (Q4167836), Wikimedia disambiguation category (Q15407973), Wikimedia disambiguation page (Q4167410), Wikimedia list article (Q13406463)”: this property must not be used with the listed properties and values. (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/P7400#Conflicts with P31, SPARQL

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/P7400#Scope, SPARQL

Qualifiers “applies to part (P518), criterion used (P1013), subject named as (P1810), point in time (P585), reason for deprecated rank (P2241), object named as (P1932), number of works (P3740), reason for preferred rank (P7452), alternative name (P4970)”: this property should be used only with the listed qualifiers. (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/P7400#allowed qualifiers, SPARQL

Format “[a-z0-9-]+”: value must be formatted using this pattern (PCRE syntax). (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/P7400#Format, 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/P7400#Entity types

please add a query to count the number of items with LibraryThing Author ID's

hi! i added hundered of LibraryThing Author ID values manualy during the last months.

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beside a query for this property please add also similar queries at VIAF ID, GND ID, WorldCat ID, Jewish encyclopedia ID, YIVO encyclopedia ID and step by step to many others especially to properties related to Esperanto, Yiddish, Icelandic, Romanian. thanks in advance gangleri aka lery raynhart munich 2A02:3033:407:5846:68B7:6DE5:E008:B8E5 21:39, 21 February 2022 (UTC)

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it seams that the link

https://w.wiki/4sQJ

counts the number of items. actually are 8,925 pages with P7400. 21:09, 22 February 2022 (UTC) 185.109.152.7

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please add also

a sample query to ifentify the person where a particulary value is used. please use the value added to Sophocles ([Q7235]]).

query about identifier value based on:(LibraryThing author ID (P7400) of Sophocles (Q7235))

SELECT * WHERE {
?item wdt:P7400 "sophocles"
}

Try it!

please add a query to list persons where the property LibraryThing Author ID is used and links to dewiki are available

please add a query to list persons where the property LibraryThing Author ID is missing and links to dewiki are available

thanks in advance gangleri 14:19, 22 February 2022 (UTC) 62.54.176.88

20:49, 22 February 2022 (UTC) 185.109.152.7