diff -u b/search_api_db/src/Plugin/search_api/backend/Database.php b/search_api_db/src/Plugin/search_api/backend/Database.php
--- b/search_api_db/src/Plugin/search_api/backend/Database.php
+++ b/search_api_db/src/Plugin/search_api/backend/Database.php
@@ -11,6 +11,7 @@
 use Drupal\Component\Utility\Unicode;
 use Drupal\Core\Config\ConfigFactoryInterface;
 use Drupal\Core\Database\Database as CoreDatabase;
+use Drupal\Core\Database\Query\Condition;
 use Drupal\Core\Database\Query\SelectInterface;
 use Drupal\Core\Extension\ModuleHandlerInterface;
 use Drupal\Core\Form\FormStateInterface;
@@ -1782,7 +1783,7 @@
           // @todo Stop recognizing "!=" as an operator.
           $operator = ($f[2] == '<>' || $f[2] == '!=') ? 'NOT LIKE' : 'LIKE';
           $prefix = Utility::createCombinedId($f[1], '');
-          $cond->condition($alias . '.item_id', Database::getConnection()->escapeLike($prefix) . '%', $operator);
+          $cond->condition($alias . '.item_id', $this->database->escapeLike($prefix) . '%', $operator);
           continue;
         }
         if (!isset($fields[$f[0]])) {
diff -u b/src/Plugin/views/filter/SearchApiTerm.php b/src/Plugin/views/filter/SearchApiTerm.php
--- b/src/Plugin/views/filter/SearchApiTerm.php
+++ b/src/Plugin/views/filter/SearchApiTerm.php
@@ -303,7 +303,6 @@
    * {@inheritdoc}
    */
   protected function idsToString(array $ids) {
-
     return implode(', ', Database::getConnection()->select('taxonomy_term_data', 'td')
       ->fields('td', array('name'))
       ->condition('td.tid', array_filter($ids))