[10:00:01] <ASammour>	 Hi All!. 4 years before, I have written some queries to extract some useful data from English Wikipedia, and then use these data to make enrich the same article in other Wikipedia Like Arabic Wikipedia for example. Those queries were working fine before, but right now, it's not working. See this example: https://quarry.wmcloud.org/query/36779
[10:01:20] <ASammour>	 I checked all the documentation to verify for any schema updates but with no luck. The problem in short, is that I am not able to write cross Wikis queries, special between enwiki_p and arwiki_p.
[10:04:10] <ASammour>	 However, for example, I am able to write cross Wiki query between arwiki_p and fawiki_p, or arwiki_p and hewiki_p.
[10:04:16] <ASammour>	 Any help regarding this please?
[11:30:37] <Rook>	 ASammour: I don't believe that is possible since the replica redesign a few years ago https://wikitech.wikimedia.org/wiki/News/Wiki_Replicas_2020_Redesign
[12:24:54] <Rook>	 https://noc.wikimedia.org/db.php has a map showing which schemas are on the same db and thus can work with a union (arwiki fawiki and hewiki for instance are all on s7)