start with lower and upper exist same time in zhwikt

SQL

USE zhwiktionary_p;
SELECT page_namespace, page_title, CONCAT(case
                                          when page_namespace = 10 then "Template:"
                                          when page_namespace = 11 then "Template talk:"
                                          when page_namespace = 828 then "Module:"
                                          when page_namespace = 829 then "Module talk:"
                                          end, page_title) AS 'real title', rd_title
FROM page
INNER JOIN page AS page2 ON CONCAT(
  UCASE(
    SUBSTRING(
      CONVERT(
        page.page_title USING utf8
      ), 1, 1
    )
  ), SUBSTRING(
    page.page_title, 2, LENGTH(page.page_title)-1
  )
) = page2.page_title = page2.rd_from
WHERE page_title REGEXP '^[a-z]'
	AND (page_namespace = 10 OR page_namespace = 11 OR page_namespace = 828 OR page_namespace = 829)
SQL

Checking query status...
