class Update

1. 8.x drupal/core/lib/Drupal/Core/Database/Query/Update.php \Drupal\Core\Database\Query\Update
2. 8.x drupal/core/lib/Drupal/Core/Database/Driver/mysql/Update.php \Drupal\Core\Database\Driver\mysql\Update
3. 8.x drupal/core/lib/Drupal/Core/Database/Driver/sqlite/Update.php \Drupal\Core\Database\Driver\sqlite\Update
4. 8.x drupal/core/lib/Drupal/Core/Database/Driver/pgsql/Update.php \Drupal\Core\Database\Driver\pgsql\Update

CommentApprovalTest::testApprovalAdminInterface in drupal/core/modules/comment/lib/Drupal/comment/Tests/CommentApprovalTest.php

Test comment approval functionality through admin/content/comment.

CommentTestBase::performCommentOperation in drupal/core/modules/comment/lib/Drupal/comment/Tests/CommentTestBase.php

Performs the specified operation on the specified comment.

comment_admin_overview in drupal/core/modules/comment/comment.admin.inc

Form constructor for the comment overview administration form.

Connection::update in drupal/core/lib/Drupal/Core/Database/Connection.php

Prepares and returns an UPDATE query object.

DisplayOverview::buildForm in drupal/core/modules/field_ui/lib/Drupal/field_ui/DisplayOverview.php

Implements \Drupal\Core\Form\FormInterface::buildForm().

... See full list

class Update extends QueryUpdate {
  public function execute() {
    $max_placeholder = 0;
    $blobs = array();
    $blob_count = 0;

    // Because we filter $fields the same way here and in __toString(), the
    // placeholders will all match up properly.
    $stmt = $this->connection
      ->prepareQuery((string) $this);

    // Fetch the list of blobs and sequences used on that table.
    $table_information = $this->connection
      ->schema()
      ->queryTableInformation($this->table);

    // Expressions take priority over literal fields, so we process those first
    // and remove any literal fields that conflict.
    $fields = $this->fields;
    $expression_fields = array();
    foreach ($this->expressionFields as $field => $data) {
      if (!empty($data['arguments'])) {
        foreach ($data['arguments'] as $placeholder => $argument) {

          // We assume that an expression will never happen on a BLOB field,
          // which is a fairly safe assumption to make since in most cases
          // it would be an invalid query anyway.
          $stmt
            ->bindParam($placeholder, $data['arguments'][$placeholder]);
        }
      }
      unset($fields[$field]);
    }
    foreach ($fields as $field => $value) {
      $placeholder = ':db_update_placeholder_' . $max_placeholder++;
      if (isset($table_information->blob_fields[$field])) {
        $blobs[$blob_count] = fopen('php://memory', 'a');
        fwrite($blobs[$blob_count], $value);
        rewind($blobs[$blob_count]);
        $stmt
          ->bindParam($placeholder, $blobs[$blob_count], PDO::PARAM_LOB);
        ++$blob_count;
      }
      else {
        $stmt
          ->bindParam($placeholder, $fields[$field]);
      }
    }
    if (count($this->condition)) {
      $this->condition
        ->compile($this->connection, $this);
      $arguments = $this->condition
        ->arguments();
      foreach ($arguments as $placeholder => $value) {
        $stmt
          ->bindParam($placeholder, $arguments[$placeholder]);
      }
    }
    $options = $this->queryOptions;
    $options['already_prepared'] = TRUE;
    $this->connection
      ->query($stmt, $options);
    return $stmt
      ->rowCount();
  }

}