Non-dead people on Czech Wikipedia since year 1500

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SELECT cat_title, (SELECT COUNT(DISTINCT cl_from) FROM categorylinks WHERE cl_to = cat_title) AS count_all, (SELECT COUNT(DISTINCT cl_from) FROM categorylinks WHERE cl_from IN (SELECT cl_from FROM categorylinks WHERE cl_to = cat_title) AND cl_to LIKE 'Úmrtí_%') AS count_dead, count_dead/count_all AS ratio FROM category WHERE cat_title REGEXP '^Narození_(1[5-8]..|19[0-1].|192[01])$' ORDER BY cat_title

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