public function renameColumn($oldName, $newName)
{
foreach ($this->rows as $row) {
$row->renameColumn($oldName, $newName);
$subTable = $row->getSubtable();
if ($subTable) {
$subTable->renameColumn($oldName, $newName);
}
}
if (!is_null($this->summaryRow)) {
$this->summaryRow->renameColumn($oldName, $newName);
}
}