echoing an AVG value from a virtual value with mysql and php -


i have following query , gives me percentage. works great , echo in table. in table want echo avg % total.i.e have 12 months of year , want avg. % year @ bottom of table. have worked out how valuations , instructions stored in database. but.. how do 'virtual' column %..as has been created query , not physical column in database.

  • iam starting think need combine total valuations total instructions %. ideas how can this?

    $query= "select *, concat(round(( instructions/valuations * 100 ),0),'%') percentage office_figures2016"; $result = mysqli_query($conn, $query); while($office_figures2016=mysqli_fetch_assoc($result)){

    it echos :

    echo"".$office_figures2016['percentage']."";

and here php totals each column...the third part of code wrong have far:

<?php $sql = "select round(avg(valuations),0) value_sum office_figures2016";  $result = $conn->query($sql);   if ($result->num_rows > 0) {     // output data of each row     while($row = $result->fetch_assoc()) {           echo "<td> " . $row["value_sum"]."</td>";   $sql = "select round(avg(instructions),0) value_sum office_figures2016";  $result = $conn->query($sql);  if ($result->num_rows > 0) {     // output data of each row     while($row = $result->fetch_assoc()) {           echo "<td> " . $row["value_sum"]."</td>";   // need divide total valuations total instructions x 100 = %  // somehow need combine value sums together..  if?   $sql = "select round(avg(''),0) value_sum office_figures2016";  $result = $conn->query($sql);  if ($result->num_rows > 0) {     // output data of each row     while($row = $result->fetch_assoc()) {           echo "<td> " . $row["value_sum"]."</td>"; 

i redid formula divide instructions , valuations in table x100 = %.

$sql = "select round(avg(instructions / valuations *100 ),0) value_sum office_figures2016";

$result = $conn->query($sql);  if ($result->num_rows > 0) {     // output data of each row     while($row = $result->fetch_assoc()) {           echo "<td> " . $row["value_sum"]."</td>";

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