Question

With the first query in the following code I am looking for the checkings made in Berlin under the game number two.

With the second query I want to give points for each of the checkings.

As you will see I am using the function SUM. But let’s say that I have 2 checkings and the points for each checking are 50. Well, instead of echoing 100, with this code I echo 5050

What is wrong with it?

Thanks a lot

THE CODE IS CORRECTED AND WORKING, JUST IN CASE SOMEBODY NEEDS IT. Thanks to all

       $querya = "SELECT * FROM checkins where gamesid=2 and city='Berlin'";
 $resulta = mysql_query($querya) or die(mysql_error());

 $sumOfPoints = 0;
 while($rowa = mysql_fetch_array($resulta)){

      $n = $rowa['venuesid'];
      $queryb = "SELECT venuesid, SUM(points) as sumpoints from venues where venuesid='".$n."' GROUP BY venuesid ORDER BY venuesid";
      $resultb = mysql_query($queryb) or die(mysql_error());

      while($rowb = mysql_fetch_array($resultb)){

           $sumOfPoints +=  $rowb['sumpoints'];

      }

 }


  echo "Total points is $sumOfPoints<br/>";

Answer 1

Some suggestions

1. Use SUM(points) AS sum (only for clarity when use the sum)

2. Check that points are numerical fields not varchar.