Question

Please i need your help. I’m performing SUM() on a column for course_unit, but i want it to omit a certain condition and then continue the loop. Example: course that have a grade of AR should be omitted from the loop, then continue.

Thanks for the help and patience. I most appreciate it.
Thanks

Query4 is used to generate some rows of course_unit and Score

  $query4 = mysql_query("SELECT  c.course_unit, m.score
  FROM    maintable AS m
  INNER JOIN students AS s ON
  m.matric_no = s.matric_no
  INNER JOIN courses AS c ON
  m.course_code = c.course_code
  WHERE m.matric_no = '".$matric_no."'
  AND m.level = '".$level."'")
  or die (mysql_error());

Query3 is used for the summation of the course_units

 $query3 = mysql_query("SELECT  SUM(c.
 course_unit) AS 'TOTAL'
 FROM    maintable AS m
 INNER JOIN students AS s ON
 m.matric_no = s.matric_no
 INNER JOIN courses AS c ON
 m.course_code = c.course_code
 WHERE m.matric_no = '".$matric_no."'
 AND m.level = '".$level."'")
 or die (mysql_error());

Grades in Respect to Score

    while ($row8 = mysql_fetch_assoc($query8)) {
            if ($row8['score'] >= 70) {
              $grade = 'A';
            }
            elseif ($row8['score'] >= 60) {
               $grade = 'B';
            }elseif ($row8['score'] >= 50) {
               $grade = 'C';
            }elseif ($row8['score'] >= 45) {
               $grade = 'D';
            }elseif($row8['score'] >= 40) {
               $grade = 'E';
            }elseif($row8['score'] >= 0) &&
            ($row8['score'] < 40){
               $grade = 'F';
            }else{
               $grade = 'AR';
            }   
     }   

Calculation of the Grade Point

      $grade_point = 0;
      while ($row4 = mysql_fetch_assoc($query4)) {
         if ($row4['score'] >= 70) {
            $score = 5;
          }
          elseif ($row4['score'] >= 60) {
             $score = 4;
          }elseif ($row4['score'] >= 50) {
             $score = 3;
          }elseif ($row4['score'] >= 45) {
             $score = 2;
          }elseif($row4['score'] >= 40) {
             $score = 1;
          }else{
             $score = 0;
          } 

          $grade_point += $score * $row4['course_unit'];

      }

QUESTION UPDATE

If the loop breaks at

$grade == 'AR'

Does the course having that grade gets it’s course_unit calculated in
SUM() ?

Answer 1

How about this:

while( <loop condition> )
{
    if( $grade == "AR" )
    {
        continue;
    }
    <other statements>
}