core-bundle/src/Resources/contao/library/Contao/Database.php
public function prepare($strQuery)
	{
		$objStatement = new Statement($this->resConnection, $this->blnDisableAutocommit);

		return $objStatement->prepare($strQuery);
	}
public function prepare($strQuery)
	{
		$objStatement = new Statement($this->resConnection, $this->blnDisableAutocommit);

		return $objStatement->prepare($strQuery);
	}
Prepare a query and return a Statement object

@param string $strQuery The query string

@return Statement The Statement object