mysql sort and add sequence

/**Create table*/
CREATE TABLE ss(id INT(4),name VARCHAR(20));
/**Insert test data*/
INSERT INTO ss VAlUES(1,'robin');
INSERT INTO ss VAlUES(2,'wentasy');
INSERT INTO ss VAlUES(3,'justdb');
INSERT INTO ss VAlUES(4,'wen');
INSERT INTO ss SELECT * FROM temp;
INSERT INTO ss SELECT * FROM temp;
INSERT INTO ss SELECT * FROM temp;
INSERT INTO ss SELECT * FROM temp;

/**Query sequence*/
SELECT
  @rownum := @rownum + 1 AS rownum,
  NAME
FROM
  ss,(SELECT  @rownum := 0) temp