diff --git a/core/lib/Drupal/Core/Database/Connection.php b/core/lib/Drupal/Core/Database/Connection.php
index 803689b..abecfd6 100644
--- a/core/lib/Drupal/Core/Database/Connection.php
+++ b/core/lib/Drupal/Core/Database/Connection.php
@@ -523,7 +523,7 @@ public function makeComment($comments) {
    *
    * For example, the comment:
    * @code
-   * db_update('example')
+   * \Drupal::database()->update('example')
    *  ->condition('id', $id)
    *  ->fields(array('field2' => 10))
    *  ->comment('Exploit * / DROP TABLE node; --')
diff --git a/core/lib/Drupal/Core/Database/database.api.php b/core/lib/Drupal/Core/Database/database.api.php
index 45a5618..0339ce3 100644
--- a/core/lib/Drupal/Core/Database/database.api.php
+++ b/core/lib/Drupal/Core/Database/database.api.php
@@ -127,7 +127,7 @@
  * INSERT, UPDATE, and DELETE queries need special care in order to behave
  * consistently across databases; you should never use db_query() to run
  * an INSERT, UPDATE, or DELETE query. Instead, use functions db_insert(),
- * db_update(), and db_delete() to obtain a base query on your table, and then
+ * \Drupal::database()->update(), and db_delete() to obtain a base query on your table, and then
  * add dynamic conditions (as illustrated in @ref sec_dynamic above).
  *
  * As a note, db_insert() and similar functions are wrappers on connection
@@ -190,7 +190,7 @@
  *   // The transaction is still open here.
  *
  *   if ($id % 2 == 0) {
- *     db_update('example')
+ *     \Drupal::database()->update('example')
  *       ->condition('id', $id)
  *       ->fields(array('field2' => 10))
  *       ->execute();
diff --git a/core/lib/Drupal/Core/Entity/entity.api.php b/core/lib/Drupal/Core/Entity/entity.api.php
index 5387c7e..19d4161 100644
--- a/core/lib/Drupal/Core/Entity/entity.api.php
+++ b/core/lib/Drupal/Core/Entity/entity.api.php
@@ -991,7 +991,7 @@ function hook_ENTITY_TYPE_insert(Drupal\Core\Entity\EntityInterface $entity) {
  */
 function hook_entity_update(Drupal\Core\Entity\EntityInterface $entity) {
   // Update the entity's entry in a fictional table of all entities.
-  db_update('example_entity')
+  \Drupal::database()->update('example_entity')
     ->fields([
       'updated' => REQUEST_TIME,
     ])
@@ -1015,7 +1015,7 @@ function hook_entity_update(Drupal\Core\Entity\EntityInterface $entity) {
  */
 function hook_ENTITY_TYPE_update(Drupal\Core\Entity\EntityInterface $entity) {
   // Update the entity's entry in a fictional table of this type of entity.
-  db_update('example_entity')
+  \Drupal::database()->update('example_entity')
     ->fields([
       'updated' => REQUEST_TIME,
     ])
diff --git a/core/modules/aggregator/tests/src/Functional/AggregatorCronTest.php b/core/modules/aggregator/tests/src/Functional/AggregatorCronTest.php
index bb7c90a..54bba32 100644
--- a/core/modules/aggregator/tests/src/Functional/AggregatorCronTest.php
+++ b/core/modules/aggregator/tests/src/Functional/AggregatorCronTest.php
@@ -29,7 +29,7 @@ public function testCron() {
 
     // Test feed locking when queued for update.
     $this->deleteFeedItems($feed);
-    db_update('aggregator_feed')
+    \Drupal::database()->update('aggregator_feed')
       ->condition('fid', $feed->id())
       ->fields([
         'queued' => REQUEST_TIME,
@@ -37,7 +37,7 @@ public function testCron() {
       ->execute();
     $this->cronRun();
     $this->assertEqual(0, db_query('SELECT COUNT(*) FROM {aggregator_item} WHERE fid = :fid', [':fid' => $feed->id()])->fetchField());
-    db_update('aggregator_feed')
+    \Drupal::database()->update('aggregator_feed')
       ->condition('fid', $feed->id())
       ->fields([
         'queued' => 0,
diff --git a/core/modules/aggregator/tests/src/Functional/UpdateFeedItemTest.php b/core/modules/aggregator/tests/src/Functional/UpdateFeedItemTest.php
index b850ca9..7d521bf 100644
--- a/core/modules/aggregator/tests/src/Functional/UpdateFeedItemTest.php
+++ b/core/modules/aggregator/tests/src/Functional/UpdateFeedItemTest.php
@@ -49,7 +49,7 @@ public function testUpdateFeedItem() {
 
     // Sleep for 3 second.
     sleep(3);
-    db_update('aggregator_feed')
+    \Drupal::database()->update('aggregator_feed')
       ->condition('fid', $feed->id())
       ->fields([
         'checked' => 0,
diff --git a/core/modules/contact/tests/drupal-7.contact.database.php b/core/modules/contact/tests/drupal-7.contact.database.php
index bd36384..ca61c0c 100644
--- a/core/modules/contact/tests/drupal-7.contact.database.php
+++ b/core/modules/contact/tests/drupal-7.contact.database.php
@@ -10,7 +10,7 @@
  */
 
 // Update the default category to that it is not selected.
-db_update('contact')
+\Drupal::database()->update('contact')
   ->fields(['selected' => '0'])
   ->condition('cid', '1')
   ->execute();
diff --git a/core/modules/file/src/Tests/FileFieldRevisionTest.php b/core/modules/file/src/Tests/FileFieldRevisionTest.php
index 7b7b4d3..6ed7d39 100644
--- a/core/modules/file/src/Tests/FileFieldRevisionTest.php
+++ b/core/modules/file/src/Tests/FileFieldRevisionTest.php
@@ -10,6 +10,7 @@
  * @group file
  */
 class FileFieldRevisionTest extends FileFieldTestBase {
+
   /**
    * Tests creating multiple revisions of a node and managing attached files.
    *
@@ -112,7 +113,7 @@ public function testRevisions() {
     // Call file_cron() to clean up the file. Make sure the changed timestamp
     // of the file is older than the system.file.temporary_maximum_age
     // configuration value.
-    db_update('file_managed')
+    \Drupal::database()->update('file_managed')
       ->fields([
         'changed' => REQUEST_TIME - ($this->config('system.file')->get('temporary_maximum_age') + 1),
       ])
@@ -128,7 +129,7 @@ public function testRevisions() {
     // Call file_cron() to clean up the file. Make sure the changed timestamp
     // of the file is older than the system.file.temporary_maximum_age
     // configuration value.
-    db_update('file_managed')
+    \Drupal::database()->update('file_managed')
       ->fields([
         'changed' => REQUEST_TIME - ($this->config('system.file')->get('temporary_maximum_age') + 1),
       ])
diff --git a/core/modules/file/tests/src/Kernel/DeleteTest.php b/core/modules/file/tests/src/Kernel/DeleteTest.php
index 3b868c0..c139d41 100644
--- a/core/modules/file/tests/src/Kernel/DeleteTest.php
+++ b/core/modules/file/tests/src/Kernel/DeleteTest.php
@@ -55,7 +55,7 @@ public function testInUse() {
     // Call file_cron() to clean up the file. Make sure the changed timestamp
     // of the file is older than the system.file.temporary_maximum_age
     // configuration value.
-    db_update('file_managed')
+    \Drupal::database()->update('file_managed')
       ->fields([
         'changed' => REQUEST_TIME - ($this->config('system.file')->get('temporary_maximum_age') + 1),
       ])
diff --git a/core/modules/file/tests/src/Kernel/UsageTest.php b/core/modules/file/tests/src/Kernel/UsageTest.php
index 672de0f..fc84e3c 100644
--- a/core/modules/file/tests/src/Kernel/UsageTest.php
+++ b/core/modules/file/tests/src/Kernel/UsageTest.php
@@ -127,7 +127,7 @@ public function testRemoveUsage() {
   public function createTempFiles() {
     // Temporary file that is old.
     $temp_old = file_save_data('');
-    db_update('file_managed')
+    \Drupal::database()->update('file_managed')
       ->fields([
         'status' => 0,
         'changed' => REQUEST_TIME - $this->config('system.file')->get('temporary_maximum_age') - 1,
@@ -138,7 +138,7 @@ public function createTempFiles() {
 
     // Temporary file that is new.
     $temp_new = file_save_data('');
-    db_update('file_managed')
+    \Drupal::database()->update('file_managed')
       ->fields(['status' => 0])
       ->condition('fid', $temp_new->id())
       ->execute();
@@ -146,7 +146,7 @@ public function createTempFiles() {
 
     // Permanent file that is old.
     $perm_old = file_save_data('');
-    db_update('file_managed')
+    \Drupal::database()->update('file_managed')
       ->fields(['changed' => REQUEST_TIME - $this->config('system.file')->get('temporary_maximum_age') - 1])
       ->condition('fid', $temp_old->id())
       ->execute();
diff --git a/core/modules/locale/locale.translation.inc b/core/modules/locale/locale.translation.inc
index 571f7d2..8dd2552 100644
--- a/core/modules/locale/locale.translation.inc
+++ b/core/modules/locale/locale.translation.inc
@@ -342,7 +342,7 @@ function locale_cron_fill_queue() {
 
     // Update the last_checked timestamp of the project+language that will
     // be checked for updates.
-    db_update('locale_file')
+    \Drupal::database()->update('locale_file')
       ->fields(['last_checked' => REQUEST_TIME])
       ->condition('project', $file->project)
       ->condition('langcode', $file->langcode)
diff --git a/core/modules/locale/src/Tests/LocaleUpdateCronTest.php b/core/modules/locale/src/Tests/LocaleUpdateCronTest.php
index 78a14ec..b994fab 100644
--- a/core/modules/locale/src/Tests/LocaleUpdateCronTest.php
+++ b/core/modules/locale/src/Tests/LocaleUpdateCronTest.php
@@ -47,7 +47,7 @@ public function testUpdateCron() {
 
     // Prepare for test: Simulate that the file has not been checked for a long
     // time. Set the last_check timestamp to zero.
-    $query = db_update('locale_file');
+    $query = \Drupal::database()->update('locale_file');
     $query->fields(['last_checked' => 0]);
     $query->condition('project', 'contrib_module_two');
     $query->condition('langcode', 'de');
diff --git a/core/modules/node/src/Tests/NodeRevisionsTest.php b/core/modules/node/src/Tests/NodeRevisionsTest.php
index 1982266..449a779 100644
--- a/core/modules/node/src/Tests/NodeRevisionsTest.php
+++ b/core/modules/node/src/Tests/NodeRevisionsTest.php
@@ -200,7 +200,7 @@ public function testRevisions() {
     // Set the revision timestamp to an older date to make sure that the
     // confirmation message correctly displays the stored revision date.
     $old_revision_date = REQUEST_TIME - 86400;
-    db_update('node_revision')
+    \Drupal::database()->update('node_revision')
       ->condition('vid', $nodes[2]->getRevisionId())
       ->fields([
         'revision_timestamp' => $old_revision_date,
diff --git a/core/modules/node/tests/src/Functional/NodeAdminTest.php b/core/modules/node/tests/src/Functional/NodeAdminTest.php
index 24a50cf..71f83f5 100644
--- a/core/modules/node/tests/src/Functional/NodeAdminTest.php
+++ b/core/modules/node/tests/src/Functional/NodeAdminTest.php
@@ -69,7 +69,7 @@ public function testContentAdminSort() {
     foreach (['dd', 'aa', 'DD', 'bb', 'cc', 'CC', 'AA', 'BB'] as $prefix) {
       $changed += 1000;
       $node = $this->drupalCreateNode(['title' => $prefix . $this->randomMachineName(6)]);
-      db_update('node_field_data')
+      \Drupal::database()->update('node_field_data')
         ->fields(['changed' => $changed])
         ->condition('nid', $node->id())
         ->execute();
diff --git a/core/modules/node/tests/src/Functional/NodeBlockFunctionalTest.php b/core/modules/node/tests/src/Functional/NodeBlockFunctionalTest.php
index ad3613d..e69d905 100644
--- a/core/modules/node/tests/src/Functional/NodeBlockFunctionalTest.php
+++ b/core/modules/node/tests/src/Functional/NodeBlockFunctionalTest.php
@@ -70,13 +70,13 @@ public function testRecentNodeBlock() {
     $node3 = $this->drupalCreateNode($default_settings);
 
     // Change the changed time for node so that we can test ordering.
-    db_update('node_field_data')
+    \Drupal::database()->update('node_field_data')
       ->fields([
         'changed' => $node1->getChangedTime() + 100,
       ])
       ->condition('nid', $node2->id())
       ->execute();
-    db_update('node_field_data')
+    \Drupal::database()->update('node_field_data')
       ->fields([
         'changed' => $node1->getChangedTime() + 200,
       ])
diff --git a/core/modules/node/tests/src/Functional/NodeRevisionsAllTest.php b/core/modules/node/tests/src/Functional/NodeRevisionsAllTest.php
index 7e71847..005aba3 100644
--- a/core/modules/node/tests/src/Functional/NodeRevisionsAllTest.php
+++ b/core/modules/node/tests/src/Functional/NodeRevisionsAllTest.php
@@ -166,7 +166,7 @@ public function testRevisions() {
     // Set the revision timestamp to an older date to make sure that the
     // confirmation message correctly displays the stored revision date.
     $old_revision_date = REQUEST_TIME - 86400;
-    db_update('node_revision')
+    \Drupal::database()->update('node_revision')
       ->condition('vid', $nodes[2]->getRevisionId())
       ->fields([
         'revision_timestamp' => $old_revision_date,
diff --git a/core/modules/path/path.api.php b/core/modules/path/path.api.php
index df20b95..429c1e1 100644
--- a/core/modules/path/path.api.php
+++ b/core/modules/path/path.api.php
@@ -39,7 +39,7 @@ function hook_path_insert($path) {
  */
 function hook_path_update($path) {
   if ($path['alias'] != $path['original']['alias']) {
-    db_update('mytable')
+    \Drupal::database()->update('mytable')
       ->fields(['alias' => $path['alias']])
       ->condition('pid', $path['pid'])
       ->execute();
diff --git a/core/modules/search/search.module b/core/modules/search/search.module
index ae99a87..8eeb41c 100644
--- a/core/modules/search/search.module
+++ b/core/modules/search/search.module
@@ -571,7 +571,7 @@ function search_index($type, $sid, $langcode, $text) {
  *   $type and $sid is marked.
  */
 function search_mark_for_reindex($type = NULL, $sid = NULL, $langcode = NULL) {
-  $query = db_update('search_dataset')
+  $query = \Drupal::database()->update('search_dataset')
     ->fields(['reindex' => REQUEST_TIME])
     // Only mark items that were not previously marked for reindex, so that
     // marked items maintain their priority by request time.
diff --git a/core/modules/search/tests/src/Functional/SearchMultilingualEntityTest.php b/core/modules/search/tests/src/Functional/SearchMultilingualEntityTest.php
index 3dfc117..108d646 100644
--- a/core/modules/search/tests/src/Functional/SearchMultilingualEntityTest.php
+++ b/core/modules/search/tests/src/Functional/SearchMultilingualEntityTest.php
@@ -206,7 +206,7 @@ public function testMultilingualSearch() {
     // previously.
     $current = REQUEST_TIME;
     $old = $current - 10;
-    db_update('search_dataset')
+    \Drupal::database()->update('search_dataset')
       ->fields(['reindex' => $old])
       ->condition('reindex', $current, '>=')
       ->execute();
diff --git a/core/modules/tracker/tracker.module b/core/modules/tracker/tracker.module
index bf40dc1..66e20cd 100644
--- a/core/modules/tracker/tracker.module
+++ b/core/modules/tracker/tracker.module
@@ -279,7 +279,7 @@ function _tracker_add($nid, $uid, $changed) {
     ])
     ->execute();
   // Update the times for all the other users tracking the post.
-  db_update('tracker_user')
+  \Drupal::database()->update('tracker_user')
     ->condition('nid', $nid)
     ->fields([
       'changed' => $changed,
@@ -363,14 +363,14 @@ function _tracker_remove($nid, $uid = NULL, $changed = NULL) {
 
       // And then we push the out the new changed timestamp to our denormalized
       // tables.
-      db_update('tracker_node')
+      \Drupal::database()->update('tracker_node')
         ->fields([
           'changed' => $changed,
           'published' => $node->isPublished(),
         ])
         ->condition('nid', $nid)
         ->execute();
-      db_update('tracker_node')
+      \Drupal::database()->update('tracker_node')
         ->fields([
           'changed' => $changed,
           'published' => $node->isPublished(),
diff --git a/core/modules/user/src/Tests/UserBlocksTest.php b/core/modules/user/src/Tests/UserBlocksTest.php
index 0a4c619..bfc3d66 100644
--- a/core/modules/user/src/Tests/UserBlocksTest.php
+++ b/core/modules/user/src/Tests/UserBlocksTest.php
@@ -157,7 +157,7 @@ public function testWhosOnlineBlock() {
    * Updates the access column for a user.
    */
   private function updateAccess($uid, $access = REQUEST_TIME) {
-    db_update('users_field_data')
+    \Drupal::database()->update('users_field_data')
       ->condition('uid', $uid)
       ->fields(['access' => $access])
       ->execute();
diff --git a/core/modules/user/src/Tests/UserPasswordResetTest.php b/core/modules/user/src/Tests/UserPasswordResetTest.php
index 528d38b..c887a71 100644
--- a/core/modules/user/src/Tests/UserPasswordResetTest.php
+++ b/core/modules/user/src/Tests/UserPasswordResetTest.php
@@ -60,7 +60,7 @@ protected function setUp() {
     // Set the last login time that is used to generate the one-time link so
     // that it is definitely over a second ago.
     $account->login = REQUEST_TIME - mt_rand(10, 100000);
-    db_update('users_field_data')
+    \Drupal::database()->update('users_field_data')
       ->fields(['login' => $account->getLastLoginTime()])
       ->condition('uid', $account->id())
       ->execute();
@@ -316,7 +316,7 @@ public function testResetImpersonation() {
 
     // Unique password hashes are automatically generated, the only way to
     // change that is to update it directly in the database.
-    db_update('users_field_data')
+    \Drupal::database()->update('users_field_data')
       ->fields(['pass' => NULL])
       ->condition('uid', [$user1->id(), $user2->id()], 'IN')
       ->execute();
diff --git a/core/modules/user/src/Tests/UserPictureTest.php b/core/modules/user/src/Tests/UserPictureTest.php
index 6d546f0..c53bece 100644
--- a/core/modules/user/src/Tests/UserPictureTest.php
+++ b/core/modules/user/src/Tests/UserPictureTest.php
@@ -63,7 +63,7 @@ public function testCreateDeletePicture() {
     // Call file_cron() to clean up the file. Make sure the timestamp
     // of the file is older than the system.file.temporary_maximum_age
     // configuration value.
-    db_update('file_managed')
+    \Drupal::database()->update('file_managed')
       ->fields([
         'changed' => REQUEST_TIME - ($this->config('system.file')->get('temporary_maximum_age') + 1),
       ])
diff --git a/core/modules/user/tests/src/Functional/UserCancelTest.php b/core/modules/user/tests/src/Functional/UserCancelTest.php
index 83020b4..1794ba9 100644
--- a/core/modules/user/tests/src/Functional/UserCancelTest.php
+++ b/core/modules/user/tests/src/Functional/UserCancelTest.php
@@ -107,7 +107,7 @@ public function testUserCancelUid1() {
     ];
     // We cannot use $account->save() here, because this would result in the
     // password being hashed again.
-    db_update('users_field_data')
+    \Drupal::database()->update('users_field_data')
       ->fields($account)
       ->condition('uid', 1)
       ->execute();
diff --git a/core/modules/user/tests/src/Kernel/TempStoreDatabaseTest.php b/core/modules/user/tests/src/Kernel/TempStoreDatabaseTest.php
index b3d7ff1..187ecad 100644
--- a/core/modules/user/tests/src/Kernel/TempStoreDatabaseTest.php
+++ b/core/modules/user/tests/src/Kernel/TempStoreDatabaseTest.php
@@ -134,7 +134,7 @@ public function testUserTempStore() {
 
     // Now manually expire the item (this is not exposed by the API) and then
     // assert it is no longer accessible.
-    db_update('key_value_expire')
+    \Drupal::database()->update('key_value_expire')
       ->fields(['expire' => REQUEST_TIME - 1])
       ->condition('collection', "user.shared_tempstore.$collection")
       ->condition('name', $key)
diff --git a/core/modules/user/user.api.php b/core/modules/user/user.api.php
index 364dd1a..6f509d8 100644
--- a/core/modules/user/user.api.php
+++ b/core/modules/user/user.api.php
@@ -55,7 +55,7 @@ function hook_user_cancel($edit, $account, $method) {
         ->execute();
       node_mass_update($nodes, ['uid' => 0], NULL, TRUE);
       // Anonymize old revisions.
-      db_update('node_field_revision')
+      \Drupal::database()->update('node_field_revision')
         ->fields(['uid' => 0])
         ->condition('uid', $account->id())
         ->execute();
diff --git a/core/scripts/generate-d7-content.sh b/core/scripts/generate-d7-content.sh
index 8b591f4..0ed4e8d 100644
--- a/core/scripts/generate-d7-content.sh
+++ b/core/scripts/generate-d7-content.sh
@@ -290,27 +290,27 @@
 $node->log = "added a broken node";
 $node->path = array('alias' => "content/1263769200");
 node_save($node);
-db_update('node')
+\Drupal::database()->update('node')
   ->fields(array(
     'type' => $node_type,
   ))
   ->condition('nid', $node->nid)
   ->execute();
-db_update('field_data_body')
+\Drupal::database()->update('field_data_body')
   ->fields(array(
     'bundle' => $node_type,
   ))
   ->condition('entity_id', $node->nid)
   ->condition('entity_type', 'node')
   ->execute();
-db_update('field_revision_body')
+\Drupal::database()->update('field_revision_body')
   ->fields(array(
     'bundle' => $node_type,
   ))
   ->condition('entity_id', $node->nid)
   ->condition('entity_type', 'node')
   ->execute();
-db_update('field_config_instance')
+\Drupal::database()->update('field_config_instance')
   ->fields(array(
     'bundle' => $node_type,
   ))
diff --git a/core/tests/Drupal/KernelTests/Core/Config/Storage/DatabaseStorageTest.php b/core/tests/Drupal/KernelTests/Core/Config/Storage/DatabaseStorageTest.php
index 0aecc72..915a240 100644
--- a/core/tests/Drupal/KernelTests/Core/Config/Storage/DatabaseStorageTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Config/Storage/DatabaseStorageTest.php
@@ -34,7 +34,7 @@ protected function insert($name, $data) {
   }
 
   protected function update($name, $data) {
-    db_update('config')->fields(['data' => $data])->condition('name', $name)->execute();
+    \Drupal::database()->update('config')->fields(['data' => $data])->condition('name', $name)->execute();
   }
 
   protected function delete($name) {
diff --git a/core/tests/Drupal/KernelTests/Core/Database/UpdateComplexTest.php b/core/tests/Drupal/KernelTests/Core/Database/UpdateComplexTest.php
index 69d5d5d..f17879d 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/UpdateComplexTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/UpdateComplexTest.php
@@ -15,7 +15,7 @@ class UpdateComplexTest extends DatabaseTestBase {
    * Tests updates with OR conditionals.
    */
   public function testOrConditionUpdate() {
-    $update = db_update('test')
+    $update = \Drupal::database()->update('test')
       ->fields(['job' => 'Musician'])
       ->condition((new Condition('OR'))
         ->condition('name', 'John')
@@ -32,7 +32,7 @@ public function testOrConditionUpdate() {
    * Tests WHERE IN clauses.
    */
   public function testInConditionUpdate() {
-    $num_updated = db_update('test')
+    $num_updated = \Drupal::database()->update('test')
       ->fields(['job' => 'Musician'])
       ->condition('name', ['John', 'Paul'], 'IN')
       ->execute();
@@ -48,7 +48,7 @@ public function testInConditionUpdate() {
   public function testNotInConditionUpdate() {
     // The o is lowercase in the 'NoT IN' operator, to make sure the operators
     // work in mixed case.
-    $num_updated = db_update('test')
+    $num_updated = \Drupal::database()->update('test')
       ->fields(['job' => 'Musician'])
       ->condition('name', ['John', 'Paul', 'George'], 'NoT IN')
       ->execute();
@@ -62,7 +62,7 @@ public function testNotInConditionUpdate() {
    * Tests BETWEEN conditional clauses.
    */
   public function testBetweenConditionUpdate() {
-    $num_updated = db_update('test')
+    $num_updated = \Drupal::database()->update('test')
       ->fields(['job' => 'Musician'])
       ->condition('age', [25, 26], 'BETWEEN')
       ->execute();
@@ -76,7 +76,7 @@ public function testBetweenConditionUpdate() {
    * Tests LIKE conditionals.
    */
   public function testLikeConditionUpdate() {
-    $num_updated = db_update('test')
+    $num_updated = \Drupal::database()->update('test')
       ->fields(['job' => 'Musician'])
       ->condition('name', '%ge%', 'LIKE')
       ->execute();
@@ -91,7 +91,7 @@ public function testLikeConditionUpdate() {
    */
   public function testUpdateExpression() {
     $before_age = db_query('SELECT age FROM {test} WHERE name = :name', [':name' => 'Ringo'])->fetchField();
-    $num_updated = db_update('test')
+    $num_updated = \Drupal::database()->update('test')
       ->condition('name', 'Ringo')
       ->fields(['job' => 'Musician'])
       ->expression('age', 'age + :age', [':age' => 4])
@@ -112,7 +112,7 @@ public function testUpdateExpression() {
    */
   public function testUpdateOnlyExpression() {
     $before_age = db_query('SELECT age FROM {test} WHERE name = :name', [':name' => 'Ringo'])->fetchField();
-    $num_updated = db_update('test')
+    $num_updated = \Drupal::database()->update('test')
       ->condition('name', 'Ringo')
       ->expression('age', 'age + :age', [':age' => 4])
       ->execute();
@@ -131,7 +131,7 @@ public function testSubSelectUpdate() {
     // Clone this to make sure we are running a different query when
     // asserting.
     $select = clone $subselect;
-    $query = db_update('test')
+    $query = \Drupal::database()->update('test')
       ->expression('age', $subselect)
       ->condition('name', 'Ringo');
     // Save the number of rows that updated for assertion later.
diff --git a/core/tests/Drupal/KernelTests/Core/Database/UpdateLobTest.php b/core/tests/Drupal/KernelTests/Core/Database/UpdateLobTest.php
index 501f918..8a813a4 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/UpdateLobTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/UpdateLobTest.php
@@ -20,7 +20,7 @@ public function testUpdateOneBlob() {
       ->execute();
 
     $data .= $data;
-    db_update('test_one_blob')
+    \Drupal::database()->update('test_one_blob')
       ->condition('id', $id)
       ->fields(['blob1' => $data])
       ->execute();
@@ -40,7 +40,7 @@ public function testUpdateMultipleBlob() {
       ])
       ->execute();
 
-    db_update('test_two_blobs')
+    \Drupal::database()->update('test_two_blobs')
       ->condition('id', $id)
       ->fields(['blob1' => 'and so', 'blob2' => 'is this'])
       ->execute();
diff --git a/core/tests/Drupal/KernelTests/Core/Database/UpdateTest.php b/core/tests/Drupal/KernelTests/Core/Database/UpdateTest.php
index 6bc9131..181ef1a 100644
--- a/core/tests/Drupal/KernelTests/Core/Database/UpdateTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Database/UpdateTest.php
@@ -13,7 +13,7 @@ class UpdateTest extends DatabaseTestBase {
    * Confirms that we can update a single record successfully.
    */
   public function testSimpleUpdate() {
-    $num_updated = db_update('test')
+    $num_updated = \Drupal::database()->update('test')
       ->fields(['name' => 'Tiffany'])
       ->condition('id', 1)
       ->execute();
@@ -28,7 +28,7 @@ public function testSimpleUpdate() {
    */
   public function testSimpleNullUpdate() {
     $this->ensureSampleDataNull();
-    $num_updated = db_update('test_null')
+    $num_updated = \Drupal::database()->update('test_null')
       ->fields(['age' => NULL])
       ->condition('name', 'Kermit')
       ->execute();
@@ -42,7 +42,7 @@ public function testSimpleNullUpdate() {
    * Confirms that we can update multiple records successfully.
    */
   public function testMultiUpdate() {
-    $num_updated = db_update('test')
+    $num_updated = \Drupal::database()->update('test')
       ->fields(['job' => 'Musician'])
       ->condition('job', 'Singer')
       ->execute();
@@ -56,7 +56,7 @@ public function testMultiUpdate() {
    * Confirms that we can update multiple records with a non-equality condition.
    */
   public function testMultiGTUpdate() {
-    $num_updated = db_update('test')
+    $num_updated = \Drupal::database()->update('test')
       ->fields(['job' => 'Musician'])
       ->condition('age', 26, '>')
       ->execute();
@@ -70,7 +70,7 @@ public function testMultiGTUpdate() {
    * Confirms that we can update multiple records with a where call.
    */
   public function testWhereUpdate() {
-    $num_updated = db_update('test')
+    $num_updated = \Drupal::database()->update('test')
       ->fields(['job' => 'Musician'])
       ->where('age > :age', [':age' => 26])
       ->execute();
@@ -84,7 +84,7 @@ public function testWhereUpdate() {
    * Confirms that we can stack condition and where calls.
    */
   public function testWhereAndConditionUpdate() {
-    $update = db_update('test')
+    $update = \Drupal::database()->update('test')
       ->fields(['job' => 'Musician'])
       ->where('age > :age', [':age' => 26])
       ->condition('name', 'Ringo');
@@ -101,7 +101,7 @@ public function testWhereAndConditionUpdate() {
   public function testExpressionUpdate() {
     // Ensure that expressions are handled properly. This should set every
     // record's age to a square of itself.
-    $num_rows = db_update('test')
+    $num_rows = \Drupal::database()->update('test')
       ->expression('age', 'age * age')
       ->execute();
     $this->assertIdentical($num_rows, 4, 'Updated 4 records.');
@@ -120,7 +120,7 @@ public function testUpdateAffectedRows() {
     // them actually don't have to be changed because their value was already
     // 'sleep'. Still, execute() should return 5 affected rows, not only 3,
     // because that's cross-db expected behavior.
-    $num_rows = db_update('test_task')
+    $num_rows = \Drupal::database()->update('test_task')
       ->condition('priority', 1, '<>')
       ->fields(['task' => 'sleep'])
       ->execute();
@@ -131,7 +131,7 @@ public function testUpdateAffectedRows() {
    * Confirm that we can update the primary key of a record successfully.
    */
   public function testPrimaryKeyUpdate() {
-    $num_updated = db_update('test')
+    $num_updated = \Drupal::database()->update('test')
       ->fields(['id' => 42, 'name' => 'John'])
       ->condition('id', 1)
       ->execute();
@@ -145,7 +145,7 @@ public function testPrimaryKeyUpdate() {
    * Confirm that we can update values in a column with special name.
    */
   public function testSpecialColumnUpdate() {
-    $num_updated = db_update('test_special_columns')
+    $num_updated = \Drupal::database()->update('test_special_columns')
       ->fields(['offset' => 'New offset value'])
       ->condition('id', 1)
       ->execute();