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

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

Revision as of 21:54, 30 May 2024

4,045 bytes added , 5 months ago

→‎Subject

Lpc

Bots, Bureaucrats, emailconfirmed, Administrators

30,537

edits

@@ Line 937: / Line 937: @@
 ====Place of Production====
 ====Subject====
+This example identifies manuscripts described as being about Arab astronomy.
+<syntaxhighlight lang="SPARQL">
+# prefixes
+PREFIX wd: <https://catalog.digital-scriptorium.org/entity/>
+PREFIX wds: <https://catalog.digital-scriptorium.org/entity/statement/>
+PREFIX wdv: <https://catalog.digital-scriptorium.org/value/>
+PREFIX wdt: <https://catalog.digital-scriptorium.org/prop/direct/>
+PREFIX p: <https://catalog.digital-scriptorium.org/prop/>
+PREFIX ps: <https://catalog.digital-scriptorium.org/prop/statement/>
+PREFIX pq: <https://catalog.digital-scriptorium.org/prop/qualifier/>
+PREFIX wikibase: <http://wikiba.se/ontology#>
+PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
+# find manuscript records assigned the subject "Arab astronomy"
+SELECT ?record ?recordLabel ?subjectString (GROUP_CONCAT(?termLabel;separator="|") as ?terms)
+WHERE {
+# set variable value for subject or subjects to be queried
+VALUES ?term { wd:Q3035 } # Astronomy, Arab
+# bind query variables
+  BIND(p:P19 AS ?subjectAsRecordedStatement).
+  BIND(ps:P19 AS ?subjectAsRecorded).
+  BIND(pq:P20 AS ?hasTerm).
+# statement: manuscript record has statement for subject
+  ?record ?subjectAsRecordedStatement ?subjectStatement .
+# statement: subject statement has subject object recorded as string value
+  ?subjectStatement ?subjectAsRecorded ?subjectString .
+# statement: subject statement has qualifier for structured/authority value
+  ?subjectStatement ?hasTerm ?term .
+# return English language labels
+  SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en".
+    ?record rdfs:label ?recordLabel .
+    ?term rdfs:label ?termLabel .
+  }
+  }
+GROUP BY ?record ?recordLabel ?subjectString
+ORDER BY ?recordLabel
+</syntaxhighlight>
+Try it [https://catalog.digital-scriptorium.org/query/#%23%20prefixes%0APREFIX%20wd%3A%20%3Chttps%3A%2F%2Fcatalog.digital-scriptorium.org%2Fentity%2F%3E%0APREFIX%20wds%3A%20%3Chttps%3A%2F%2Fcatalog.digital-scriptorium.org%2Fentity%2Fstatement%2F%3E%0APREFIX%20wdv%3A%20%3Chttps%3A%2F%2Fcatalog.digital-scriptorium.org%2Fvalue%2F%3E%0APREFIX%20wdt%3A%20%3Chttps%3A%2F%2Fcatalog.digital-scriptorium.org%2Fprop%2Fdirect%2F%3E%0APREFIX%20p%3A%20%3Chttps%3A%2F%2Fcatalog.digital-scriptorium.org%2Fprop%2F%3E%0APREFIX%20ps%3A%20%3Chttps%3A%2F%2Fcatalog.digital-scriptorium.org%2Fprop%2Fstatement%2F%3E%0APREFIX%20pq%3A%20%3Chttps%3A%2F%2Fcatalog.digital-scriptorium.org%2Fprop%2Fqualifier%2F%3E%0APREFIX%20wikibase%3A%20%3Chttp%3A%2F%2Fwikiba.se%2Fontology%23%3E%0APREFIX%20rdfs%3A%20%3Chttp%3A%2F%2Fwww.w3.org%2F2000%2F01%2Frdf-schema%23%3E%0A%0A%23%20find%20manuscript%20records%20assigned%20the%20subject%20%22Arab%20astronomy%22%0ASELECT%20%3Frecord%20%3FrecordLabel%20%3FsubjectString%20%28GROUP_CONCAT%28%3FtermLabel%3Bseparator%3D%22%7C%22%29%20as%20%3Fterms%29%0AWHERE%20%7B%0A%23%20set%20variable%20value%20for%20subject%20or%20subjects%20to%20be%20queried%0AVALUES%20%3Fterm%20%7B%20wd%3AQ3035%20%7D%20%23%20Astronomy%2C%20Arab%0A%23%20bind%20query%20variables%0A%20%20BIND%28p%3AP19%20AS%20%3FsubjectAsRecordedStatement%29.%0A%20%20BIND%28ps%3AP19%20AS%20%3FsubjectAsRecorded%29.%0A%20%20BIND%28pq%3AP20%20AS%20%3FhasTerm%29.%0A%0A%23%20statement%3A%20manuscript%20record%20has%20statement%20for%20subject%0A%20%20%3Frecord%20%3FsubjectAsRecordedStatement%20%3FsubjectStatement%20.%0A%23%20statement%3A%20subject%20statement%20has%20subject%20object%20recorded%20as%20string%20value%0A%20%20%3FsubjectStatement%20%3FsubjectAsRecorded%20%3FsubjectString%20.%0A%23%20statement%3A%20subject%20statement%20has%20qualifier%20for%20structured%2Fauthority%20value%0A%20%20%3FsubjectStatement%20%3FhasTerm%20%3Fterm%20.%0A%0A%23%20return%20English%20language%20labels%0A%20%20SERVICE%20wikibase%3Alabel%20%7B%20bd%3AserviceParam%20wikibase%3Alanguage%20%22%5BAUTO_LANGUAGE%5D%2Cen%22.%0A%20%20%20%20%3Frecord%20rdfs%3Alabel%20%3FrecordLabel%20.%0A%20%20%20%20%3Fterm%20rdfs%3Alabel%20%3FtermLabel%20.%0A%20%20%7D%0A%20%20%7D%0AGROUP%20BY%20%3Frecord%20%3FrecordLabel%20%3FsubjectString%0AORDER%20BY%20%3FrecordLabel here].
 ====Title====