function DatabaseConnection_mysql::escapeAlias

Escapes an alias name string.

Force all alias names to be strictly alphanumeric-plus-underscore. In contrast to DatabaseConnection::escapeField() / DatabaseConnection::escapeTable(), this doesn't allow the period (".") because that is not allowed in aliases.

Return value

string The sanitized field name string.

Overrides DatabaseConnection::escapeAlias

File

includes/database/mysql/database.inc, line 430

Class

DatabaseConnection_mysql

Code

public function escapeAlias($field) {
  $field = parent::escapeAlias($field);
  return $this->quoteIdentifier($field);
}