public company edit volume

SQL

USE enwiki_p;
SELECT page_title as article, COUNT(DISTINCT rc.rc_id) as recent_edits, 
  page_counter as deprecated_pageviews, -- ancient; see comment above
  COUNT(DISTINCT pl.pl_from) as inbound_wikilinks
FROM page
JOIN categorylinks AS cats ON page.page_id = cats.cl_from 
JOIN recentchanges AS rc ON page.page_title = rc.rc_title
JOIN pagelinks AS pl ON page.page_title = pl.pl_title
  AND pl.pl_namespace = 0 -- careful: query won't terminate without this; wtf!
WHERE cats.cl_to IN ("Companies listed on the New York Stock Exchange")
AND cats.cl_type = "page"
AND page.page_namespace = 0 AND page.page_is_redirect = 0
AND rc.rc_namespace = 0 AND rc.rc_bot = 0 AND rc.rc_minor = 0
GROUP BY article;
SQL

Checking query status...
