interdiff impossible; taking evasive action
reverted:
--- b/core/lib/Drupal/Core/Database/Driver/pgsql/Connection.php
+++ a/core/lib/Drupal/Core/Database/Driver/pgsql/Connection.php
@@ -351,45 +351,6 @@
     }
   }
 
-  /**
-   * Retrieves a sequence name that is owned by the table and column..
-   *
-   * @param string $table
-   *   A table name that is not prefixed or quoted.
-   * @param string $column
-   *   The column name.
-   *
-   * @return string|null
-   *   The name of the sequence or NULL if it does not exist.
-   */
-  public function getSequence($table, $column) {
-    $args = [
-      ':table' => $this->prefixTables('{' . $table . '}'),
-      ':column' => $column,
-    ];
-    return $this
-      ->query("SELECT pg_get_serial_sequence(:table, :column)", $args)
-      ->fetchField();
-  }
-
-  /**
-   * Checks if a sequence exists.
-   *
-   * @param string $name
-   *   The fully-qualified sequence name.
-   *
-   * @return bool
-   *   TRUE if the sequence exists by the name.
-   *
-   * @see \Drupal\Core\Database\Connection::makeSequenceName()
-   */
-  public function sequenceExists($name) {
-    $args = [':name' => $name];
-    return (bool) $this
-      ->query("SELECT c.relname FROM pg_class as c WHERE c.relkind = 'S' AND c.relname = :name", $args)
-      ->fetchField();
-  }
-
 }
 
 /**
unchanged:
--- a/core/lib/Drupal/Core/Database/Driver/pgsql/Connection.php
+++ b/core/lib/Drupal/Core/Database/Driver/pgsql/Connection.php
@@ -9,7 +9,7 @@
 use Drupal\Core\Database\StatementInterface;
 use Drupal\Core\Database\StatementWrapper;
 
-// cSpell:ignore ilike nextval
+// cSpell:ignore ilike nextval relname relkind relname
 
 /**
  * @addtogroup database
@@ -368,6 +368,45 @@ public function rollbackSavepoint($savepoint_name = 'mimic_implicit_commit') {
     }
   }
 
+  /**
+   * Retrieves a sequence name that is owned by the table and column..
+   *
+   * @param string $table
+   *   A table name that is not prefixed or quoted.
+   * @param string $column
+   *   The column name.
+   *
+   * @return string|null
+   *   The name of the sequence or NULL if it does not exist.
+   */
+  public function getSequence($table, $column) {
+    $args = [
+      ':table' => $this->prefixTables('{' . $table . '}'),
+      ':column' => $column,
+    ];
+    return $this
+      ->query("SELECT pg_get_serial_sequence(:table, :column)", $args)
+      ->fetchField();
+  }
+
+  /**
+   * Checks if a sequence exists.
+   *
+   * @param string $name
+   *   The fully-qualified sequence name.
+   *
+   * @return bool
+   *   TRUE if the sequence exists by the name.
+   *
+   * @see \Drupal\Core\Database\Connection::makeSequenceName()
+   */
+  public function sequenceExists($name) {
+    $args = [':name' => $name];
+    return (bool) $this
+      ->query("SELECT c.relname FROM pg_class as c WHERE c.relkind = 'S' AND c.relname = :name", $args)
+      ->fetchField();
+  }
+
 }
 
 /**
interdiff impossible; taking evasive action
reverted:
--- b/core/lib/Drupal/Core/Database/Driver/pgsql/Schema.php
+++ a/core/lib/Drupal/Core/Database/Driver/pgsql/Schema.php
@@ -958,7 +958,7 @@
       // not when altering. Because of that, the sequence needs to be created
       // and initialized by hand.
       $seq = $this->connection->makeSequenceName($table, $field_new);
+      $this->connection->query("CREATE SEQUENCE " . $seq);
-      $this->connection->query("CREATE SEQUENCE " . $seq . " OWNED BY {" . $table . "}." . $field_new);
       // Set sequence to maximal field value to not conflict with existing
       // entries.
       $this->connection->query("SELECT setval('" . $seq . "', MAX(\"" . $field . '")) FROM {' . $table . "}");
@@ -1016,25 +1016,6 @@
     }
   }
 
-  /**
-   * Alters the ownership of a sequence.
-   *
-   * This is used for updating orphaned sequences.
-   * See issue https://www.drupal.org/project/drupal/issues/3028706
-   *
-   * @param string $table
-   *   The unquoted or prefixed table name.
-   * @param string $column
-   *   The column name for the sequence.
-   *
-   * @internal
-   */
-  public function updateSequenceOwnership($table, $column) {
-    $seq = $this->connection->makeSequenceName($table, $column);
-    $table_name = $this->connection->prefixTables('{' . $table . '}');
-    $this->connection->query('ALTER SEQUENCE IF EXISTS ' . $seq . ' OWNED BY ' . $table_name . '.' . $column);
-  }
-
   /**
    * Retrieve a table or column comment.
    */
unchanged:
--- a/core/lib/Drupal/Core/Database/Driver/pgsql/Schema.php
+++ b/core/lib/Drupal/Core/Database/Driver/pgsql/Schema.php
@@ -971,7 +971,7 @@ public function changeField($table, $field, $field_new, $spec, $new_keys = []) {
       // not when altering. Because of that, the sequence needs to be created
       // and initialized by hand.
       $seq = $this->connection->makeSequenceName($table, $field_new);
-      $this->connection->query("CREATE SEQUENCE " . $seq);
+      $this->connection->query("CREATE SEQUENCE " . $seq . " OWNED BY {" . $table . "}." . $field_new);
       // Set sequence to maximal field value to not conflict with existing
       // entries.
       $this->connection->query("SELECT setval('" . $seq . "', MAX(\"" . $field . '")) FROM {' . $table . "}");
@@ -1029,6 +1029,25 @@ protected function _createKeys($table, $new_keys) {
     }
   }
 
+  /**
+   * Alters the ownership of a sequence.
+   *
+   * This is used for updating orphaned sequences.
+   * See issue https://www.drupal.org/project/drupal/issues/3028706
+   *
+   * @param string $table
+   *   The unquoted or prefixed table name.
+   * @param string $column
+   *   The column name for the sequence.
+   *
+   * @internal
+   */
+  public function updateSequenceOwnership($table, $column) {
+    $seq = $this->connection->makeSequenceName($table, $column);
+    $table_name = $this->connection->prefixTables('{' . $table . '}');
+    $this->connection->query('ALTER SEQUENCE IF EXISTS ' . $seq . ' OWNED BY ' . $table_name . '.' . $column);
+  }
+
   /**
    * Retrieve a table or column comment.
    */
diff -u b/core/modules/system/system.install b/core/modules/system/system.install
--- b/core/modules/system/system.install
+++ b/core/modules/system/system.install
@@ -1552,7 +1552,7 @@
     // Discovers all content entity types with integer entity keys that are most
     // likely serial columns.
     $entity_types = \Drupal::entityTypeManager()->getDefinitions();
-    // @var \Drupal\Core\Entity\EntityTypeInterface $entity_type
+    /** @var \Drupal\Core\Entity\EntityTypeInterface $entity_type */
     foreach ($entity_types as $entity_type) {
       $storage_class = $entity_type->getStorageClass();
       if (is_subclass_of($storage_class, SqlContentEntityStorage::class)) {
@@ -1560,7 +1560,7 @@
         $id_key = $entity_type->getKey('id');
         $revision_key = $entity_type->getKey('revision');
 
-        // @var \Drupal\Core\Field\BaseFieldDefinition[] $base_field_definitions
+        /** @var \Drupal\Core\Field\BaseFieldDefinition[] $base_field_definitions */
         $base_field_definitions = $entity_class::baseFieldDefinitions($entity_type);
         if ($base_field_definitions[$id_key]->getType() === 'integer') {
           $sandbox['tables'][] = [