How to get the top column name based on the subordinate columns in DreamWeaver

How does Dreamweaver get the top column name based on the lower-level columns?

Dreamweaver DEDECMS obtains the top column name according to the lower-level columns

Recommended learning:Dreamweavercms

SQL statement implementation

{dede:field.typeid runphp='yes'}$ID = @me; $sql = "SELECT * FROM `dede_arctype` WHERE id=$ID";
$query = mysql_query($sql);$row=mysql_fetch_array($query); $relID = "$row[reid]"; if($relID == 0) {
@me = $row[typename];}else{$sql = "SELECT `typename` FROM `dede_arctype` WHERE id=$relID";
$query = mysql_query($sql);$row=mysql_fetch_array($query); @me = $row[typename];}{/dede:field.typeid

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