Question du test Drupal 7

$query = db_select('node', 'n')
  ->fields('n', array('nid', 'title'))
  ->condition('created', REQUEST_TIME - 3600)
  ->execute();

$query = "SELECT nid, title FROM {node} WHERE created > REQUEST_TIME - 3600";

$query = db_select("SELECT nid, title FROM {node} WHERE created > REQUEST_TIME - 3600");

$query = db_query("SELECT nid, title FROM {node} WHERE created > :created", array(
  ':created' => REQUEST_TIME - 3600,
));

$query = db_select("SELECT nid, title FROM {node} WHERE created > :created", array(
  ':created' => REQUEST_TIME - 3600,
));

$query = db_query("SELECT nid, title FROM {node} WHERE created > REQUEST_TIME - 3600");