Editors of wiki using IALs ranked by number of contributions.

SQL

( 
  	SELECT 		'Simple English' AS IAL, simple_rev.rev_user AS User_ID, COUNT(simple_rev.rev_user) AS Contributions
  	FROM 		simplewiki_p.revision AS simple_rev
  	GROUP BY 	User_ID
  	ORDER BY 	Contributions DESC
  	LIMIT		3
)
UNION
( 
	SELECT 		'Esperanto' AS IAL, eo_rev.rev_user AS User_ID, COUNT(eo_rev.rev_user) AS Contributions
	FROM 		eowiki_p.revision AS eo_rev
  	GROUP BY 	User_ID
  	ORDER BY 	Contributions DESC
  	LIMIT		3
)
UNION
( 
  	SELECT 		'Ido' AS IAL, io_rev.rev_user AS User_ID, COUNT(io_rev.rev_user) AS Contributions
  	FROM 		iowiki_p.revision AS io_rev
  	GROUP BY 	User_ID
  	ORDER BY 	Contributions DESC
  	LIMIT		3
)
UNION
( 
  	SELECT 		'Interlingua' AS IAL, ia_rev.rev_user AS User_ID, COUNT(ia_rev.rev_user) AS Contributions
  	FROM 		iawiki_p.revision AS ia_rev
  	GROUP BY 	User_ID
  	ORDER BY 	Contributions DESC
  	LIMIT		3
)
UNION
( 
  	SELECT 		'Novial' AS IAL, nov_rev.rev_user AS User_ID, COUNT(nov_rev.rev_user) AS Contributions
  	FROM 		novwiki_p.revision AS nov_rev
  	GROUP BY 	User_ID
  	ORDER BY 	Contributions DESC
  	LIMIT		3
)
UNION
( 
  	SELECT 		'Interlingue' AS IAL, ie_rev.rev_user AS User_ID, COUNT(ie_rev.rev_user) AS Contributions
  	FROM 		iewiki_p.revision AS ie_rev
  	GROUP BY 	User_ID
  	ORDER BY 	Contributions DESC
  	LIMIT		3
)
UNION
( 
  	SELECT 		'Volapük' AS IAL, vo_rev.rev_user AS User_ID, COUNT(vo_rev.rev_user) AS Contributions
  	FROM 		vowiki_p.revision AS vo_rev
  	GROUP BY 	User_ID
  	ORDER BY 	Contributions DESC
  	LIMIT		3
);
SQL

Checking query status...
