Helper::dropIndexByName

static function dropIndexByName($indexName, $tableName)
{
	$dbConnection = MainHttpApplication::getConnection();
	$dbHelper = $dbConnection->getSqlHelper();

	$indexName = $dbHelper->forSql(trim($indexName));
	$tableName = $dbHelper->forSql(trim($tableName));

	if(!mb_strlen($indexName) || !mb_strlen($tableName))
		return false;

	if(!static::checkIndexNameExists($indexName, $tableName))
		return false;

	$dbConnection->query("alter table {$tableName} drop index {$indexName}");

	return true;
}