Fixed issue with extrafields join for search. Main table alias is t not

u.

dev/skeletons/skeleton_list.php

@@ -216,7 +216,7 @@ $parameters=array();
 $reshook=$hookmanager->executeHooks('printFieldListSelect',$parameters);    // Note that $action and $object may have been modified by hook
 $sql.=$hookmanager->resPrint;
 $sql.= " FROM ".MAIN_DB_PREFIX."mytable as t";
-if (is_array($extrafields->attribute_label) && count($extrafields->attribute_label)) $sql.= " LEFT JOIN ".MAIN_DB_PREFIX."mytable_extrafields as ef on (u.rowid = ef.fk_object)";
+if (is_array($extrafields->attribute_label) && count($extrafields->attribute_label)) $sql.= " LEFT JOIN ".MAIN_DB_PREFIX."mytable_extrafields as ef on (t.rowid = ef.fk_object)";
 $sql.= " WHERE 1 = 1";
 //$sql.= " WHERE u.entity IN (".getEntity('mytable',1).")";
 if ($search_field1) $sql.= natural_search("field1",$search_field1);