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mySQL group by value depending on another value


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I have some videos I upload to server for online viewing. Sometimes they are too long and I have to cut them into pieces. I am a beginner in this and I'm a little lost.  :wacko:

the idea is this:

I have these table in MySQL:

k7ro.png

and this is my php code I have so far:

$sql="SELECT * FROM table_name WHERE type = 'tutorials' and type2='word' and video_id='01' ORDER BY server ASC,format ASC,resolution ASC";

$result = mysql_query($sql);

<table>
while($row = mysql_fetch_array($result))
  {
  echo "<tr>";
        switch ($row['server'])
        {
        case "youtube":
          echo '<td><a href="';
          echo $row['short_link'].'"><image youtube/></a></td>';
          break;
        case "vimeo":
          echo '<td><a href="';
          echo $row['short_link'].'"><image vimeo/></a></td>';
          break;
        case "dailymotion":
          echo '<td><a href="';
          echo $row['short_link'].'"><image dailymotion/></a></td>';
          break;
        default:
           echo '<td><a href="';
               echo $row['short_link'].'"></a></td>';
        }
  echo "<td>" . $row['server'] . "</td>";
  echo "<td>" . $row['format'] . "</td>";
  echo "<td>" . $row['resolution'] . "</td>";
  echo "<td>" . $row['size'] . "</td>";
  echo "<td>" . $row['user'] . "</td>";
  echo "</tr>";
  }
echo "</table>"; 

but I need that if the server has parts, put all in a div and appears like this:
w1pq.png

sometimes the video has more parts, I searched for "group by" but I don't know how to integrate it.

 

How I can do that or What do I need search in google to find examples?

You'll want to do this grouping from within PHP, not as part of the query using GROUP BY. Create an array to hold the results and store the results in a multi-dimensional structure with the first level being the main video information, and a second level for the parts listing. Eg:

$results = array();
while ($row = mysql_fetch_array($result)){
   if (!isset($results[$row['server']]){
       $row['videos'] = array($row['short_link']);
       $results[$row['server']] = $row;
   }
   else {
       $results[$row['server']]['videos'][] = $row['short_link'];
   }
}

var_dump($results);
Then you'd output the results using a foreach loop over the $results array. For each row in the results array, the key 'videos' would be another array of all the videos for that server.
  • Solution

You could use a query like this

SELECT user
, GROUP_CONCAT(short_link) as short_links
, server
, format
, SUM(size) as size
, resolution
FROM table_name 
WHERE type = 'tutorials' and type2='word' and video_id='01'
GROUP BY user, server

However, your sizes need to be stored as INT (eg value 100) and not as VARCHAR (eg value 100MB)

 

When processing, explode the "short_links" field.

You'll want to do this grouping from within PHP, not as part of the query using GROUP BY. Create an array to hold the results and store the results in a multi-dimensional structure with the first level being the main video information, and a second level for the parts listing. Eg:

$results = array();
while ($row = mysql_fetch_array($result)){
   if (!isset($results[$row['server']]){
       $row['videos'] = array($row['short_link']);
       $results[$row['server']] = $row;
   }
   else {
       $results[$row['server']]['videos'][] = $row['short_link'];
   }
}

var_dump($results);
Then you'd output the results using a foreach loop over the $results array. For each row in the results array, the key 'videos' would be another array of all the videos for that server.

 

 

Thanks Kicken, but the truth, I try to understand the code, but I ended losing me more.  :wacko:

I try if watching the array could accommodate it, but could not. :mellow:

 

 

You could use a query like this

SELECT user
, GROUP_CONCAT(short_link) as short_links
, server
, format
, SUM(size) as size
, resolution
FROM table_name 
WHERE type = 'tutorials' and type2='word' and video_id='01'
GROUP BY user, server

However, your sizes need to be stored as INT (eg value 100) and not as VARCHAR (eg value 100MB)

 

When processing, explode the "short_links" field.

 

it was easier with this option. I could do it the first time.  :lol:

 

 

thanks guys. you are amazing.  O0

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