Merge tag '2.1.12'

Hotfix release 2.1.12

- This should fix a problem with the strict mode and the "Group By" statement from sql.

src/Attribute/BaseSimple.php

@@ -3,7 +3,7 @@
 /**
  * This file is part of MetaModels/core.
  *
- * (c) 2012-2019 The MetaModels team.
+ * (c) 2012-2021 The MetaModels team.
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -18,7 +18,7 @@
  * @author     Sven Baumann <[email protected]>
  * @author     David Molineus <[email protected]>
  * @author     Marc Reimann <[email protected]>
- * @copyright  2012-2019 The MetaModels team.
+ * @copyright  2012-2021 The MetaModels team.
  * @license    https://github.com/MetaModels/core/blob/master/LICENSE LGPL-3.0-or-later
  * @filesource
  */
@@ -164,7 +164,7 @@ public function getFilterOptions($idList, $usedOnly, &$arrCount = null)
                 ->from($this->getMetaModel()->getTableName())
                 ->where('id IN (:ids)')
                 ->groupBy($strCol)
-                ->orderBy('FIELD(id, :ids)')
+                ->orderBy('MIN(FIELD(id, :ids))')
                 ->setParameter('ids', $idList, Connection::PARAM_STR_ARRAY)
                 ->execute();
         } else {