USE lastfm


/**
 * Deletes all entries in badges
 * for each unique username + type
 * where more than one style or color exists
 */

DROP TABLE IF EXISTS tmp ;
CREATE TEMPORARY TABLE tmp (SELECT username, type, COUNT(username) AS count FROM badges GROUP BY username, type ) ;

SELECT badges.username, badges.type, badges.style, badges.color, badges.hits, tmp.count
	FROM badges, tmp
	WHERE badges.username = tmp.username
	AND ( (badges.type = tmp.type AND tmp.count > 1)
	   OR ( (badges.type LIKE concat(tmp.type,"%") OR tmp.type LIKE concat(badges.type,"%"))
		 AND badges.type != tmp.type )
	   ) ;

DROP TABLE tmp ;