Last modified: 2014-08-01 00:08:25 UTC
Steps to reproduce ------------------ 1. SELECT page_namespace, page_title FROM page LEFT JOIN langlinks ON ll_from=page_id WHERE page_namespace=14 AND ll_from IS NULL AND page_title LIKE "Amerikaanse%" LIMIT 3; This shows there is no entry for "Categorie:Amerikaanse_Maagdeneilanden_op_de_Olympische_Jeugdspelen" in the langlinks table However, https://nl.wikipedia.org/wiki/Categorie:Amerikaanse_Maagdeneilanden_op_de_Olympische_Jeugdspelen shows there *are* langlinks, provided by WikiData. Browse to https://nl.wikipedia.org/wiki/Categorie:Amerikaanse_Maagdeneilanden_op_de_Olympische_Jeugdspelen?action=purge Expected behavior ----------------- - Langlinks table being updated automatically, and lacking that, - ?action=purge updating the language table Actual behavior --------------- - ?action=purge does *not* update the langlinks entries - A null edit does.
(In reply to comment #0) > Actual behavior > --------------- > - ?action=purge does *not* update the langlinks entries > - A null edit does. What if you try using ?action=purge&forcelinkupdate=1 via the API ([[mw:API:Purge]])
Yes, that one works.
It's actually conceptually unclear whether langlinks should contain the *effective* language links, or only the ones actually defined on the wiki page. According to your report, the behavior is actually inconsistent. That would definitely be a bug.
langlinks table should at least not contain langlinks which are neither local defined nor at wikidata repository. select * from dewiki_p.langlinks where ll_from=6463057; +---------+---------+-------------+ | ll_from | ll_lang | ll_title | +---------+---------+-------------+ | 6463057 | en | Mark Atkins | | 6463057 | it | Mark Atkins | +---------+---------+-------------+ http://de.wikipedia.org/wiki/Mark_Atkins (with pageid 6463057) does not contain any local langlinks and on wikidata repository the it sitelink was removed three month ago https://www.wikidata.org/w/index.php?title=Q1899938&diff=128208462&oldid=127387275. So the it-langlink row must be removed. This is original an update queue problem. But there must be a way to fix this. Data Analysis Tools have big problems with this incorrect database table data.
