Creator and usergroups for pages linked from a given page

Creators and their usergroups (if administrator and/or autoreviewer) of every page linked from [[User:Uanfala/dab/missing-new-articles01]].

For [[w:en:WP:VPT#Fetch article creators from a list of articles]] circa 24 Feb 2019.

Gratuitous useless technobabble: finding the first revision of a given page with this method - revisions with no parent - is fast but not 100% reliable; it'll get false positives on a page that's been history merged and false negatives on a page that's been history split, and even more rarely from other weird situations. Specifically looking for the earliest revision, as in query 19060 (the r2.rev_id subquery) is slower but more reliable.

SQL

SELECT CONCAT('[[',CASE p2.page_namespace WHEN -2 THEN 'Media:' WHEN -1 THEN 'Special:' WHEN 0 THEN ':' WHEN 1 THEN 'Talk:' WHEN 2 THEN 'User:' WHEN 4 THEN 'Wikipedia:' WHEN 5 THEN 'Wikipedia talk:' WHEN 6 THEN ':File:' WHEN 7 THEN 'File talk:' WHEN 8 THEN 'MediaWiki:' WHEN 9 THEN 'MediaWiki talk:' WHEN 10 THEN 'Template:' WHEN 11 THEN 'Template talk:' WHEN 12 THEN 'Help:' WHEN 13 THEN 'Help talk:' WHEN 14 THEN ':Category:' WHEN 15 THEN 'Category talk:' WHEN 100 THEN 'Portal:' WHEN 101 THEN 'Portal talk:' WHEN 108 THEN 'Book:' WHEN 109 THEN 'Book talk:' WHEN 118 THEN 'Draft:' WHEN 119 THEN 'Draft talk:' WHEN 710 THEN 'TimedText:' WHEN 711 THEN 'TimedText talk:' WHEN 828 THEN 'Module:' WHEN 829 THEN 'Module talk:' WHEN 2300 THEN 'Gadget:' WHEN 2301 THEN 'Gadget talk:' WHEN 2302 THEN 'Gadget definition:' WHEN 2303 THEN 'Gadget definition talk:' ELSE CONCAT('{{ns:', p2.page_namespace, '}}:') END,p2.page_title,']]') AS pagename,
	CASE rev_actor WHEN 0 THEN rev_actor ELSE user_name END AS creator,
	ug_group,
	ug_expiry
FROM pagelinks
JOIN page p1
	ON p1.page_id = pl_from
JOIN page p2
	ON p2.page_namespace = pl_namespace AND p2.page_title = pl_title
LEFT JOIN revision
	ON rev_page = p2.page_id
LEFT JOIN user
	ON user_id = rev_actor
LEFT JOIN user_groups
	ON ug_user = rev_actor
	AND ug_group IN ('sysop', 'autoreviewer') -- remove this line to show all groups
WHERE p1.page_namespace = 2 -- user namespace
AND p1.page_title = 'User:Theredproject/sandbox/Deletion_Workshop'
AND p1.page_title = 'User:Theredproject/sandbox/Deletion-Workshop'
#AND p1.page_title = 'Uanfala/dab/missing-new-articles01'
	AND rev_parent_id = 0;

SQL

Checking query status...