SELECT IF (count(*)<5,
                    count(*),
                    0) AS sum5,
          IF (count(*)>=5
              AND count(*)<10,
                           count(*),
                           0) AS sum10,
             IF (count(*)>=10
                 AND count(*)<15,
                              count(*),
                              0) AS sum15,
                IF (count(*)>=15
                    AND count(*)<20,
                                 count(*),
                                 0) AS sum20,
                   IF (count(*)>=20 ,
                                 count(*),
                                 0) AS sum21
FROM services_vagon s
WHERE s.id_costumer=33
  AND s.date_d_uborka>='2013-08-31 23:59:59'
  AND s.date_d_uborka<='2013-09-10 23:59:59'
GROUP BY s.`id_services`

select nomer_vagona, concat (dt_fact, ' ',time_fact) date from services_vagon
where UNIX_TIMESTAMP(concat (dt_fact, ' ',time_fact))>=UNIX_TIMESTAMP('2013-08-31 23:59:59') 
and UNIX_TIMESTAMP(concat (dt_fact, ' ',time_fact))<=UNIX_TIMESTAMP('2013-09-10 23:59:59') and id_costumer=77
union
select nomer_vagona, concat (date_d_uborka, ' ',time_d_uborka) date from services_vagon
where UNIX_TIMESTAMP(concat (date_d_uborka, ' ',time_d_uborka))>=UNIX_TIMESTAMP('2013-08-31 23:59:59') 
and  UNIX_TIMESTAMP(concat(date_d_uborka, ' ',time_d_uborka))<=UNIX_TIMESTAMP('2013-09-10 23:59:59') 
and id_costumer=77
order by date

$r = mysql_query ($q_vyh);
	$s5 = 0; 
	$s10 = 0; 
	$s15 = 0; 
	$i=0;
    while ($row2 = mysql_fetch_array($r, MYSQL_ASSOC)) {
	echo $row2['nomer_vagona'].' = ';
	if ($i>0) {
			$d = $row2['date'];
			echo ($dt).'----'.($row2['date']).'<br>';
			
			if (strtotime($d)<=(strtotime($dt)+660)) {echo 'Равно<br>';$col=$col+1;}
		else {
			if ($col<=5) $s5++;
			echo 's5='.$s5.'<br>';
			if ($col<=10 && $col>5) $s10++;
			if ($col>10) $s15++;		
			$col=1;
		}
		$dt=$row2['date'];
	} else {
		$col = 1;
		echo  $row2['date'].'<br>';
		$dt = $row2['date'];
	}
	echo $col.'<br>';
	$i++;
	}

select 
 dt
 /*,timediff(dt,(select dt from table q where q.dt<t.dt order by 1 desc limit 1)) delta*/
 ,if(timediff(dt,(select dt from table q where q.dt<t.dt order by 1 desc limit 1)) < interval '10 minute'
  ,@gn
  ,@gn:=@gn+1
 ) as gn
from table t
,(select @gn:=1) zz
order by dt