This query is marked as a draft This query has been published by Zhuyifei1999.

SQL

AخA
 
USE commonswiki_p;
SELECT page_title
FROM categorylinks c1
INNER JOIN page
ON page_id = c1.cl_from
WHERE c1.cl_to = "Aircraft_by_registration"
AND (
  SELECT COUNT(cl_to)
  FROM categorylinks c2
  WHERE c2.cl_from = page_id
) < 3
;
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