一个存储过程），您不必在php中执行它们。它需要您通过将每个级别的数据与其自身连接起来，在（临时）表中创建（可能较大的）结果。如果您打算将数据放在实际的表中，这可能是一个合适的解决方案。您还可以在php或mysql中使用动态sql（使用a循环构建连接）。其

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一个存储过程），您不必在php中执行它们。它需要您通过将每个级别的数据与其自身连接起来，在（临时）表中创建（可能较大的）结果。如果您打算将数据放在实际的表中，这可能是一个合适的解决方案。您还可以在php或mysql中使用动态sql（使用a循环构建连接）。其他数据库（如postgres）也能做到这一点（因为它们支持递归）。但是（我仍然认为）在MySQL中，你不能在一个普通的查询中完成它。谢谢。是的，我需要这种格式，但我需要所有的组合，如图所示。这不是固定的一套。我需要所有的可能性。请参考图片中的最终输出表，了解我所说的内容。谢谢。是的，我需要这种格式，但我需要所有的组合，如图所示。这不是固定的一套。我需要所有的可能性。参考图像中的最终输出表，了解我所说的内容。

select group_concat(text order by T.did separator ' ') as TTT 
from (
  select l.dimgroupid as did, d.*,  l.dimlevelid as id, l.dimlevelvalue,
     concat(d.dimensiontext," ",l.dimlevelvalue) as text 
  from dimensionlevel l 
  join dimension d on d.dimensionid = l.dimid
  join dimensiongroup g on g.groupid = l.dimgroupid) as T 
where T.id=0;

| TTT                          | 
--------------------------------
| A 20 year old Man is Fresher |

    select did as groupid, group_concat(text order by dimensionid separator ' ' ) as TTT
    from ( 
           select l.dimgroupid as did, d.*,  l.dimlevelid as id, l.dimlevelvalue, concat(d.dimensiontext," ",l.dimlevelvalue) as text
           from dimensionlevel l 
           join dimension d on d.dimensionid = l.dimid
           join dimensiongroup g on g.groupid = l.dimgroupid
         ) as T
    group by id;

$sql = "SELECT `dimensionid`, `dimensiontext`, `dimensiondescr` FROM `dimension`";
$dimensions = mysqli_fetch_all (mysqli_query($con, $sql));

$sql = "SELECT `dimlevelvalue` FROM `dimensionlevel` WHERE dimid IN (SELECT dimensionid FROM dimension WHERE dimensiondescr='age') ";
$ages = mysqli_fetch_all (mysqli_query($con, $sql));

$sql = "SELECT `dimlevelvalue` FROM `dimensionlevel` WHERE dimid IN (SELECT dimensionid FROM dimension WHERE dimensiondescr='sex') ";
$sexes = mysqli_fetch_all (mysqli_query($con, $sql));

$sql = "SELECT `dimlevelvalue` FROM `dimensionlevel` WHERE dimid IN (SELECT dimensionid FROM dimension WHERE dimensiondescr='experience') ";
$experiences = mysqli_fetch_all (mysqli_query($con, $sql));

foreach ($ages as $age) {
    foreach ($sexes as $sex) {
        foreach ($experiences as $exp) {

            foreach ($dimensions as $dimension) {
                $putage = "";
                $putsex = "";
                $putexp = "";
                if($dimension[2]=="Age"){
                    $putage = $age[0];
                }elseif($dimension[2]=="Sex"){
                    $putsex = $sex[0];
                }elseif($dimension[2]=="Experience"){
                    $putexp = $exp[0];
                }
                echo $str = $dimension['1']." ".$putage.$putsex.$putexp." " ;
            }
            echo "<br>";
        }
        echo "<br>";
    }
}