php - How do I omit record that contain zeros in certain fields? -


i have query prints records database not understand how omit records contain zeros fields. fields may contain zeros townhalls, org_pressconf, rep_doors, vol_doors, contacts, phones, coffeehours, newsarticles, , mediahits. if each of fields mentioned above equal zero, how write query omit results?

// start organizer report    // sending query $result = mysql_query("select   concat(last_name, ' , ', first_name) representative,  sum(townhalls) townhalls,  sum(org_pressconf) pressconference,  sum(rep_doors) repdoors,  sum(vol_doors) volunteerdoors,  sum(contacts) contacts,  sum(phones) phones,  sum(coffeehours) coffeehours,  sum(newsarticles) newsarticles,  sum(mediahits) mediahits  reports  join representatives on reports.rep = representatives.id  join users on reports.username = users.username  date between '$from' , '$to' , role = 'organizer' group representative order representative;"); if (!$result) {     die("query show fields table failed"); }   $fields_num = mysql_num_fields($result);  echo "<h2>organizer report <small>($from $to)</small></h2>"; echo "<table border='1' cellspacing='0' cellpadding='3' cellspacing='0' cellpadding='3'> <tr>";  // printing table headers for($i=0; $i<$fields_num; $i++) {     $field = mysql_fetch_field($result);     echo "<td>{$field->name}</td>"; } echo "</tr>\n";  // printing table rows while($row = mysql_fetch_row($result)) {     echo "<tr>";      // $row array... foreach( .. ) puts every element     // of $row $cell variable     foreach($row $cell)         echo "<td>$cell</td>";      echo "</tr>\n"; }  mysql_free_result($result);      echo "</table>\n"; // end organizer report

add following having clause if want omit rows of fields equal zero.

having (townhalls + org_pressconf + rep_doors + vol_doors + contacts + phones + coffeehours + newsarticles + mediahits) > 0

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