diff -u b/core/lib/Drupal/Core/Entity/entity.api.php b/core/lib/Drupal/Core/Entity/entity.api.php
--- b/core/lib/Drupal/Core/Entity/entity.api.php
+++ b/core/lib/Drupal/Core/Entity/entity.api.php
@@ -938,12 +938,12 @@
  */
 function hook_entity_insert(Drupal\Core\Entity\EntityInterface $entity) {
   // Insert the new entity into a fictional table of all entities.
-  \Drupal::database()->insert('example_entity')
+  db_insert('example_entity')
     ->fields(array(
  */
 function hook_entity_insert(Drupal\Core\Entity\EntityInterface $entity) {
   // Insert the new entity into a fictional table of all entities.
-  db_insert('example_entity')
+  \Drupal::database()->insert('example_entity')
     ->fields([
       'type' => $entity->getEntityTypeId(),
       'id' => $entity->id(),
@@ -962,12 +962,12 @@
  */
 function hook_ENTITY_TYPE_insert(Drupal\Core\Entity\EntityInterface $entity) {
   // Insert the new entity into a fictional table of this type of entity.
-  \Drupal::database()->insert('example_entity')
+  db_insert('example_entity')
     ->fields(array(
  */
 function hook_ENTITY_TYPE_insert(Drupal\Core\Entity\EntityInterface $entity) {
   // Insert the new entity into a fictional table of this type of entity.
-  db_insert('example_entity')
+  \Drupal::database()->insert('example_entity')
     ->fields([
       'id' => $entity->id(),
       'created' => REQUEST_TIME,