DS Catalog:SPARQL Query Service/example queries: Difference between revisions

DS Catalog:SPARQL Query Service/example queries (view source)

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 This query generates a list of string values of a particular type of ''as recorded'' data occurring in a DS Record which have not be qualified by an authority value (i.e., reconciled to its linked data equivalent in a Linked Open Vocabulary or Authority).
 <syntaxhighlight lang="SPARQL">
-SELECT ?record ?recordLabel ?string ?authority ?authorityLabel #?roleLabel # (un-comment roleLabel variable when querying name data to get role information)
+SELECT ?record ?recordLabel ?string ?authority ?authorityLabel ?roleLabel
-# declared variables give a link to a record, the label of the record, a link to the authority record, and a label for the the authority record
 WHERE {
    ?record p:P14 ?stringStatement .
-	# identifies records with statements with corresponding property (change P-value for as recorded value to be queried)
    ?stringStatement ps:P14 ?string .
-	# identifies statements that have strings with corresponding property (change P-value for as recorded value to be queried)
    #FILTER NOT EXISTS { ?stringStatement pq:P17 ?authority . }
-	# identifies those statements which have not been enriched with authority values (change P-value for authority file value to be queried)
    OPTIONAL { ?stringStatement pq:P15 ?role . }
-	# only used for name data, un-comment optional clause when querying name data
      SERVICE wikibase:label {
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 }
 ORDER BY ASC (?string)
-# this sorts the results alphabetically by string values
 <syntaxhighlight>