DROP TABLE IF EXISTS t1;
CREATE TABLE t1 ( number INT NOT NULL, alpha CHAR(6) NOT NULL );
INSERT INTO t1 VALUES (1413006,'idlfmv'),
(1413065,'smpsfz'),(1413127,'sljrhx'),(1413304,'qerfnd');
SELECT number, alpha, CONCAT_WS('<---->',number,alpha) AS new
FROM t1 GROUP BY number;
number	alpha	new
1413006	idlfmv	1413006<---->idlfmv
1413065	smpsfz	1413065<---->smpsfz
1413127	sljrhx	1413127<---->sljrhx
1413304	qerfnd	1413304<---->qerfnd
SELECT CONCAT_WS('<---->',number,alpha) AS new
FROM t1 GROUP BY new LIMIT 1;
new
1413006<---->idlfmv
SELECT number, alpha, CONCAT_WS('<->',number,alpha) AS new
FROM t1 GROUP BY new LIMIT 1;
number	alpha	new
1413006	idlfmv	1413006<->idlfmv
SELECT number, alpha, CONCAT_WS('-',number,alpha,alpha,alpha,alpha,alpha,alpha,alpha) AS new
FROM t1 GROUP BY new LIMIT 1;
number	alpha	new
1413006	idlfmv	1413006-idlfmv-idlfmv-idlfmv-idlfmv-idlfmv-idlfmv-idlfmv
SELECT number, alpha, CONCAT_WS('<------------------>',number,alpha) AS new
FROM t1 GROUP BY new LIMIT 1;
number	alpha	new
1413006	idlfmv	1413006<------------------>idlfmv
drop table t1;