Timestamp format not working to get the two digit year - response (9) by simhadrijk

Hi SK RAFI,
One of the way to do it using OLAP function.
Following query would help you to understand the same.
May be you can write a recursive or stored procedure to meet your requirements on top of it.
 
SEL
t.id,
MAX( (CASE WHEN t1.rnk =1 THEN t1.name END) )
|| TRIM(CAST(',' AS CHAR(1))) ||
MAX( (CASE WHEN t1.rnk =2 THEN t1.name END) )
AS concat_name
FROM
tab1 t
INNER JOIN
(SEL
id
,name
, RANK () OVER (PARTITION BY id ORDER BY name) rnk
FROM tab1
) t1
ON t.id = t1.id
GROUP BY 1
Regards