SqlHelper::getAliasLength

public function getAliasLength();

/**
 * Returns quoted identifier.
 * 

 * For example Title become :
 * - `Title` for MySQL
 * - "TITLE" for Oracle
 * - [Title] for Ms SQL
 * 

 * @param string $identifier Table or Column name.
 *
 * @return string
 * @see SqlHelper::getLeftQuote
 * @see SqlHelper::getRightQuote
 */
public function quote($identifier)
{
	if (empty($this->idCache[$identifier]))
	{
		// security unshielding
		$quotedIdentifier = str_replace([$this->getLeftQuote(), $this->getRightQuote()], '', $identifier);

		// shield [[database.]tablename.]columnname
		if (str_contains($quotedIdentifier, '.'))
		{
			$quotedIdentifier = str_replace('.', $this->getRightQuote() . '.' . $this->getLeftQuote(), $quotedIdentifier);
		}

		// shield general borders
		$this->idCache[$identifier] = $this->getLeftQuote() . $quotedIdentifier . $this->getRightQuote();
	}

	return $this->idCache[$identifier];
}