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Vl sony
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WITH RECURSIVE Subcategories AS ( SELECT cl_from FROM categorylinks WHERE cl_to = 'American_novels_by_writer' UNION SELECT cl.cl_from FROM categorylinks cl JOIN Subcategories sc ON cl.cl_to = sc.cl_from ) SELECT DISTINCT p.page_title FROM page p JOIN categorylinks cl ON p.page_id = cl.cl_from WHERE cl.cl_to IN (SELECT cl_from FROM Subcategories);
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