DELETE FROM user WHERE username = 'dolcekoray';
DELETE FROM userfield WHERE userid NOT IN (SELECT userid FROM user);
DELETE FROM usertextfield WHERE userid NOT IN (SELECT userid FROM user);
DELETE FROM userban WHERE userid NOT IN (SELECT userid FROM user);
DELETE FROM usergroup WHERE userid NOT IN (SELECT userid FROM user);
DELETE FROM usernote WHERE userid NOT IN (SELECT userid FROM user);
DELETE FROM visitormessage WHERE userid NOT IN (SELECT userid FROM user);
DELETE FROM userstats WHERE userid NOT IN (SELECT userid FROM user);