I'm died how to use this
CONCAT_WS(separator, str1, str2,...)
CONCAT_WS() stands for CONCAT With Separator and is a special form of CONCAT(). The first argument is the separator for the rest of the arguments. The separator is added between the strings to be concatenated. The separator can be a string as can the rest of the arguments. If the separator is NULL, the result is NULL. The function skips any NULL values after the separator argument.
mysql> SELECT CONCAT_WS(',',
'First name','Second name','Last Name');
-> 'First name,Second name,Last Name'
mysql> SELECT CONCAT_WS(',','First name',NULL,'Last Name');
-> 'First name,Last Name'
i guess no hope....
----------edited
I tried the result is same
still
John ,caps
John ,jeans
John ,pants
Jack ,caps
Jack ,jeans
Jack ,pants
rather than
John , Caps, jeans ,Pant
Jack , Caps, jeans ,Pant