Difference between revisions of "Functional Dependencies"

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Line 4: Line 4:
 
is abbreviated to:
 
is abbreviated to:
 
<math>AB\to CD</math>
 
<math>AB\to CD</math>
 +
 +
= Example =
 +
== 9 single entries for 2022 sorted by social media followers ==
 +
 +
=== query ===
 +
<source lang='sparql'>
 +
# WF 2022-06-08
 +
# Singles published in 2022
 +
SELECT
 +
?single ?language ?collectionId ?collection ?collectionType ?performerId ?performer ?followerCount ?youtubeVideoId  (year(?publicationDate) as ?publicationYear)
 +
WHERE
 +
{
 +
  # instanceof
 +
  ?singleId wdt:P31 wd:Q134556. # Must be of a single
 +
  ?singleId rdfs:label ?single.
 +
  FILTER(LANG(?single)='en')
 +
 +
  #https://www.wikidata.org/wiki/Property:P361 - part of / ist Teil von
 +
  ?singleId wdt:P361 ?collectionId.
 +
  ?collectionId rdfs:label ?collection.
 +
  FILTER(LANG(?collection)='en')
 +
 +
  # https://www.wikidata.org/wiki/Property:P407 language/ Sprache des Werkes
 +
  ?singleId wdt:P407 ?languageId.
 +
  ?languageId rdfs:label ?language.
 +
  FILTER(LANG(?language)='en')
 +
 +
  # https://www.wikidata.org/wiki/Property:P1651 YouTube-Video-Kennung
 +
  ?singleId wdt:P1651 ?youtubeVideoId.
 +
 +
  ?collectionId wdt:P31 ?collectionTypeId.
 +
  ?collectionTypeId rdfs:label ?collectionType.
 +
  FILTER(LANG(?collectionType)='en').
 +
 +
  # https://www.wikidata.org/wiki/Property:P175 Performer /Interpret
 +
  ?singleId wdt:P175 ?performerId.
 +
  ?performerId rdfs:label ?performer
 +
  FILTER(LANG(?performer)='en')
 +
 +
  # https://www.wikidata.org/wiki/Property:P8687 followers / Follower
 +
  #{
 +
    #SELECT (max(?followerCount) as ?follower)
 +
    #WHERE {
 +
    ?performerId wdt:P8687 ?followerCount.
 +
    #}
 +
    #GROUP BY ?performerId
 +
  #}
 +
  #https://www.wikidata.org/wiki/Property:P577 Publication date / Veröffentlichungsdatum
 +
  ?singleId wdt:P577 ?publicationDate.
 +
  FILTER(year(?publicationDate) = 2022).
 +
} ORDER BY  DESC(?followerCount)
 +
LIMIT 9
 +
 +
</source>
 +
 +
[None/#%23%20WF%202022-06-08%0A%23%20Singles%20published%20in%202022%0ASELECT%0A%3Fsingle%20%3Flanguage%20%3FcollectionId%20%3Fcollection%20%3FcollectionType%20%3FperformerId%20%3Fperformer%20%3FfollowerCount%20%3FyoutubeVideoId%20%20%28year%28%3FpublicationDate%29%20as%20%3FpublicationYear%29%0AWHERE%0A%7B%0A%20%20%23%20instanceof%0A%20%20%3FsingleId%20wdt%3AP31%20wd%3AQ134556.%20%23%20Must%20be%20of%20a%20single%0A%20%20%3FsingleId%20rdfs%3Alabel%20%3Fsingle.%0A%20%20FILTER%28LANG%28%3Fsingle%29%3D%27en%27%29%0A%0A%20%20%23https%3A//www.wikidata.org/wiki/Property%3AP361%20-%20part%20of%20/%20ist%20Teil%20von%0A%20%20%3FsingleId%20wdt%3AP361%20%3FcollectionId.%0A%20%20%3FcollectionId%20rdfs%3Alabel%20%3Fcollection.%0A%20%20FILTER%28LANG%28%3Fcollection%29%3D%27en%27%29%0A%0A%20%20%23%20https%3A//www.wikidata.org/wiki/Property%3AP407%20language/%20Sprache%20des%20Werkes%0A%20%20%3FsingleId%20wdt%3AP407%20%3FlanguageId.%0A%20%20%3FlanguageId%20rdfs%3Alabel%20%3Flanguage.%0A%20%20FILTER%28LANG%28%3Flanguage%29%3D%27en%27%29%0A%0A%20%20%23%20https%3A//www.wikidata.org/wiki/Property%3AP1651%20YouTube-Video-Kennung%0A%20%20%3FsingleId%20wdt%3AP1651%20%3FyoutubeVideoId.%0A%0A%20%20%3FcollectionId%20wdt%3AP31%20%3FcollectionTypeId.%0A%20%20%3FcollectionTypeId%20rdfs%3Alabel%20%3FcollectionType.%0A%20%20FILTER%28LANG%28%3FcollectionType%29%3D%27en%27%29.%0A%0A%20%20%23%20https%3A//www.wikidata.org/wiki/Property%3AP175%20Performer%20/Interpret%0A%20%20%3FsingleId%20wdt%3AP175%20%3FperformerId.%0A%20%20%3FperformerId%20rdfs%3Alabel%20%3Fperformer%0A%20%20FILTER%28LANG%28%3Fperformer%29%3D%27en%27%29%0A%0A%20%20%23%20https%3A//www.wikidata.org/wiki/Property%3AP8687%20followers%20/%20Follower%0A%20%20%23%7B%0A%20%20%20%20%20%23SELECT%20%28max%28%3FfollowerCount%29%20as%20%3Ffollower%29%0A%20%20%20%20%20%23WHERE%20%7B%0A%20%20%20%20%20%3FperformerId%20wdt%3AP8687%20%3FfollowerCount.%0A%20%20%20%20%20%23%7D%0A%20%20%20%20%20%23GROUP%20BY%20%3FperformerId%0A%20%20%23%7D%0A%20%20%23https%3A//www.wikidata.org/wiki/Property%3AP577%20Publication%20date%20/%20Ver%C3%B6ffentlichungsdatum%0A%20%20%3FsingleId%20wdt%3AP577%20%3FpublicationDate.%0A%20%20FILTER%28year%28%3FpublicationDate%29%20%3D%202022%29.%0A%7D%20ORDER%20BY%20%20DESC%28%3FfollowerCount%29%0ALIMIT%209%0A try it!]
 +
=== result ===
 +
{| class="wikitable" style="text-align: left;"
 +
|+ <!-- caption -->
 +
|-
 +
! single          !! language  !! collectionId                              !! collection                        !! collectionType      !! performerId                              !! performer      !! align="right"|  followerCount !! youtubeVideoId  !! align="right"|  publicationYear
 +
|-
 +
| Let Somebody Go || English    || http://www.wikidata.org/entity/Q107597380 || Music of the Spheres              || album              || http://www.wikidata.org/entity/Q83287    || Selena Gomez  || align="right"|        65629044 || EptPhiK_q0E      || align="right"|              2022
 +
|-
 +
| As It Was      || English    || http://www.wikidata.org/entity/Q111343757 || Harry's House                      || album              || http://www.wikidata.org/entity/Q3626966  || Harry Styles  || align="right"|        36156370 || H5v3kku4y6Q      || align="right"|              2022
 +
|-
 +
| Let Somebody Go || English    || http://www.wikidata.org/entity/Q107597380 || Music of the Spheres              || album              || http://www.wikidata.org/entity/Q45188    || Coldplay      || align="right"|        23541189 || EptPhiK_q0E      || align="right"|              2022
 +
|-
 +
| Bam Bam        || English    || http://www.wikidata.org/entity/Q56071495  || Camila Cabello singles discography || singles discography || http://www.wikidata.org/entity/Q47447    || Ed Sheeran    || align="right"|        17661915 || -8VfKZCOo_I      || align="right"|              2022
 +
|-
 +
| Bam Bam        || English    || http://www.wikidata.org/entity/Q111083420 || Familia                            || album              || http://www.wikidata.org/entity/Q47447    || Ed Sheeran    || align="right"|        17661915 || -8VfKZCOo_I      || align="right"|              2022
 +
|-
 +
| Sacrifice      || English    || http://www.wikidata.org/entity/Q110400486 || Dawn FM                            || album              || http://www.wikidata.org/entity/Q2121062  || The Weeknd    || align="right"|        15549868 || VafTMsrnSTU      || align="right"|              2022
 +
|-
 +
| Out of Time    || English    || http://www.wikidata.org/entity/Q110400486 || Dawn FM                            || album              || http://www.wikidata.org/entity/Q2121062  || The Weeknd    || align="right"|        15549868 || 2fDzCWNS3ig      || align="right"|              2022
 +
|-
 +
| Bam Bam        || English    || http://www.wikidata.org/entity/Q56071495  || Camila Cabello singles discography || singles discography || http://www.wikidata.org/entity/Q18810940 || Camila Cabello || align="right"|        12717885 || -8VfKZCOo_I      || align="right"|              2022
 +
|-
 +
| Bam Bam        || English    || http://www.wikidata.org/entity/Q111083420 || Familia                            || album              || http://www.wikidata.org/entity/Q18810940 || Camila Cabello || align="right"|        12717885 || -8VfKZCOo_I      || align="right"|              2022
 +
|}
  
  

Revision as of 20:21, 8 June 2022

Notation

In Database theory: [math]\{A,B\}\to \{C,D\}[/math] is abbreviated to: [math]AB\to CD[/math]

Example

9 single entries for 2022 sorted by social media followers

query

# WF 2022-06-08
# Singles published in 2022
SELECT
?single ?language ?collectionId ?collection ?collectionType ?performerId ?performer ?followerCount ?youtubeVideoId  (year(?publicationDate) as ?publicationYear)
WHERE
{
  # instanceof
  ?singleId wdt:P31 wd:Q134556. # Must be of a single
  ?singleId rdfs:label ?single.
  FILTER(LANG(?single)='en')

  #https://www.wikidata.org/wiki/Property:P361 - part of / ist Teil von
  ?singleId wdt:P361 ?collectionId.
  ?collectionId rdfs:label ?collection.
  FILTER(LANG(?collection)='en')

  # https://www.wikidata.org/wiki/Property:P407 language/ Sprache des Werkes
  ?singleId wdt:P407 ?languageId.
  ?languageId rdfs:label ?language.
  FILTER(LANG(?language)='en')

  # https://www.wikidata.org/wiki/Property:P1651 YouTube-Video-Kennung
  ?singleId wdt:P1651 ?youtubeVideoId.

  ?collectionId wdt:P31 ?collectionTypeId.
  ?collectionTypeId rdfs:label ?collectionType.
  FILTER(LANG(?collectionType)='en').

  # https://www.wikidata.org/wiki/Property:P175 Performer /Interpret
  ?singleId wdt:P175 ?performerId.
  ?performerId rdfs:label ?performer
  FILTER(LANG(?performer)='en')

  # https://www.wikidata.org/wiki/Property:P8687 followers / Follower
  #{
     #SELECT (max(?followerCount) as ?follower)
     #WHERE {
     ?performerId wdt:P8687 ?followerCount.
     #}
     #GROUP BY ?performerId
  #}
  #https://www.wikidata.org/wiki/Property:P577 Publication date / Veröffentlichungsdatum
  ?singleId wdt:P577 ?publicationDate.
  FILTER(year(?publicationDate) = 2022).
} ORDER BY  DESC(?followerCount)
LIMIT 9

[None/#%23%20WF%202022-06-08%0A%23%20Singles%20published%20in%202022%0ASELECT%0A%3Fsingle%20%3Flanguage%20%3FcollectionId%20%3Fcollection%20%3FcollectionType%20%3FperformerId%20%3Fperformer%20%3FfollowerCount%20%3FyoutubeVideoId%20%20%28year%28%3FpublicationDate%29%20as%20%3FpublicationYear%29%0AWHERE%0A%7B%0A%20%20%23%20instanceof%0A%20%20%3FsingleId%20wdt%3AP31%20wd%3AQ134556.%20%23%20Must%20be%20of%20a%20single%0A%20%20%3FsingleId%20rdfs%3Alabel%20%3Fsingle.%0A%20%20FILTER%28LANG%28%3Fsingle%29%3D%27en%27%29%0A%0A%20%20%23https%3A//www.wikidata.org/wiki/Property%3AP361%20-%20part%20of%20/%20ist%20Teil%20von%0A%20%20%3FsingleId%20wdt%3AP361%20%3FcollectionId.%0A%20%20%3FcollectionId%20rdfs%3Alabel%20%3Fcollection.%0A%20%20FILTER%28LANG%28%3Fcollection%29%3D%27en%27%29%0A%0A%20%20%23%20https%3A//www.wikidata.org/wiki/Property%3AP407%20language/%20Sprache%20des%20Werkes%0A%20%20%3FsingleId%20wdt%3AP407%20%3FlanguageId.%0A%20%20%3FlanguageId%20rdfs%3Alabel%20%3Flanguage.%0A%20%20FILTER%28LANG%28%3Flanguage%29%3D%27en%27%29%0A%0A%20%20%23%20https%3A//www.wikidata.org/wiki/Property%3AP1651%20YouTube-Video-Kennung%0A%20%20%3FsingleId%20wdt%3AP1651%20%3FyoutubeVideoId.%0A%0A%20%20%3FcollectionId%20wdt%3AP31%20%3FcollectionTypeId.%0A%20%20%3FcollectionTypeId%20rdfs%3Alabel%20%3FcollectionType.%0A%20%20FILTER%28LANG%28%3FcollectionType%29%3D%27en%27%29.%0A%0A%20%20%23%20https%3A//www.wikidata.org/wiki/Property%3AP175%20Performer%20/Interpret%0A%20%20%3FsingleId%20wdt%3AP175%20%3FperformerId.%0A%20%20%3FperformerId%20rdfs%3Alabel%20%3Fperformer%0A%20%20FILTER%28LANG%28%3Fperformer%29%3D%27en%27%29%0A%0A%20%20%23%20https%3A//www.wikidata.org/wiki/Property%3AP8687%20followers%20/%20Follower%0A%20%20%23%7B%0A%20%20%20%20%20%23SELECT%20%28max%28%3FfollowerCount%29%20as%20%3Ffollower%29%0A%20%20%20%20%20%23WHERE%20%7B%0A%20%20%20%20%20%3FperformerId%20wdt%3AP8687%20%3FfollowerCount.%0A%20%20%20%20%20%23%7D%0A%20%20%20%20%20%23GROUP%20BY%20%3FperformerId%0A%20%20%23%7D%0A%20%20%23https%3A//www.wikidata.org/wiki/Property%3AP577%20Publication%20date%20/%20Ver%C3%B6ffentlichungsdatum%0A%20%20%3FsingleId%20wdt%3AP577%20%3FpublicationDate.%0A%20%20FILTER%28year%28%3FpublicationDate%29%20%3D%202022%29.%0A%7D%20ORDER%20BY%20%20DESC%28%3FfollowerCount%29%0ALIMIT%209%0A try it!]

result

single language collectionId collection collectionType performerId performer followerCount youtubeVideoId publicationYear
Let Somebody Go English http://www.wikidata.org/entity/Q107597380 Music of the Spheres album http://www.wikidata.org/entity/Q83287 Selena Gomez 65629044 EptPhiK_q0E 2022
As It Was English http://www.wikidata.org/entity/Q111343757 Harry's House album http://www.wikidata.org/entity/Q3626966 Harry Styles 36156370 H5v3kku4y6Q 2022
Let Somebody Go English http://www.wikidata.org/entity/Q107597380 Music of the Spheres album http://www.wikidata.org/entity/Q45188 Coldplay 23541189 EptPhiK_q0E 2022
Bam Bam English http://www.wikidata.org/entity/Q56071495 Camila Cabello singles discography singles discography http://www.wikidata.org/entity/Q47447 Ed Sheeran 17661915 -8VfKZCOo_I 2022
Bam Bam English http://www.wikidata.org/entity/Q111083420 Familia album http://www.wikidata.org/entity/Q47447 Ed Sheeran 17661915 -8VfKZCOo_I 2022
Sacrifice English http://www.wikidata.org/entity/Q110400486 Dawn FM album http://www.wikidata.org/entity/Q2121062 The Weeknd 15549868 VafTMsrnSTU 2022
Out of Time English http://www.wikidata.org/entity/Q110400486 Dawn FM album http://www.wikidata.org/entity/Q2121062 The Weeknd 15549868 2fDzCWNS3ig 2022
Bam Bam English http://www.wikidata.org/entity/Q56071495 Camila Cabello singles discography singles discography http://www.wikidata.org/entity/Q18810940 Camila Cabello 12717885 -8VfKZCOo_I 2022
Bam Bam English http://www.wikidata.org/entity/Q111083420 Familia album http://www.wikidata.org/entity/Q18810940 Camila Cabello 12717885 -8VfKZCOo_I 2022


Links

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