details in one Row without any redundancy in the CATID

Question

$query1 = "select * 
             from linkat_link 
            where emailuser = '$email2' 
               or linkname ='$domain_name2' 
         ORDER BY date desc 
            LIMIT $From,$PageNO";

id   catid      discription            price
------------------------------------
1         1     domain name     100
2         1      book                  50
3        2      hosting               20
4        2      myservice           20

in this script i have one problem , if i have an ID for Each Cantegory , i have some duplicated CATID which has different content but shares the same CATID, i need to make any duplicated CATID to show in one , and all the discription will be in the same line (Cell) on the same row . So Each CatID will have all the details in one Row without any redundancy in the CATID

Answer 1

Using:

  SELECT t.catid,
         GROUP_CONCAT(t.description),
         GROUP_CONCAT(t.price)
    FROM LINKAT_LINK t
   WHERE t.emailuser = mysql_real_escape_string($email2)
      OR t.linkname = mysql_real_escape_string($domain_name2)
GROUP BY t.catid
ORDER BY t.date DESC
   LIMIT mysql_real_escape_string($From), mysql_real_escape_string($PageNO)

...will return:

catid   description        price
--------------------------------
1       domain name,book   100,50
2       hosting,myservice  20,20

See the documentation for what the GROUP_CONCAT function does.

How to print it to screen using PHP?

---

Use:

<?php

 $query1 = "SELECT t.catid,
                   GROUP_CONCAT(t.description) AS grp_desc,
                   GROUP_CONCAT(t.price) AS grp_price
              FROM LINKAT_LINK t
             WHERE t.emailuser = mysql_real_escape_string($email2)
                OR t.linkname = mysql_real_escape_string($domain_name2)
          GROUP BY t.catid
          ORDER BY t.date DESC
             LIMIT mysql_real_escape_string($From), mysql_real_escape_string($PageNO)";

 $result = mysql_query($query1);

 while($row = mysql_fetch_array($result)) {
   echo "CatID:{$row['catid']} <br>" .
     "Description : {$row['grp_desc']} <br>" .
     "Price : {$row['grp_price']} <br><br>";
 } ?>