IF(SELECT MAX(DateAdded) FROM RestoreDetectors " +
" WHERE CONVERT(VARCHAR,DateAdded,101) = CONVERT(VARCHAR,GETDATE(), 101) " +
" AND DATEDIFF(SECOND, DateAdded,GETDATE()) <= {0}) IS NULL"

IF(SELECT MAX(DateAdded) FROM RestoreDetectors
    WHERE DATE_FORMAT(DateAdded,'%m/%d/%Y') =
    DATE_FORMAT(NOW(),'%m/%d/%Y')
    AND TIMESTAMPDIFF(SECOND,DateAdded,NOW()) <= ? ) IS NULL