Dabs "Foo bar" matching articles "Foo Bar"

SQL

SELECT Pd.page_title, CONCAT(SUBSTRING_INDEX(Pd.page_title, "_", 1),"_",
 UPPER(CONVERT(SUBSTRING(Pd.page_title, LOCATE("_", Pd.page_title)+1, 1) USING latin1)),
 SUBSTRING(Pd.page_title, LOCATE("_", Pd.page_title)+2))
FROM categorylinks
JOIN page Pd ON Pd.page_id = cl_from AND Pd.page_title REGEXP "_[a-z]" AND SUBSTRING(Pd.page_title, LOCATE("_", Pd.page_title)+1, 1) REGEXP "[a-z]" AND Pd.page_namespace = 0
JOIN page Pa ON Pa.page_namespace = 0 AND Pa.page_is_redirect = 0 
AND Pa.page_title = CONCAT(SUBSTRING_INDEX(Pd.page_title, "_", 1),"_",
 UPPER(CONVERT(SUBSTRING(Pd.page_title, LOCATE("_", Pd.page_title)+1, 1) USING latin1)),
 SUBSTRING(Pd.page_title, LOCATE("_", Pd.page_title)+2))
WHERE cl_to = "All_disambiguation_pages" AND cl_type = "page"
SQL

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