Group Concat Help

Databases
1

Hi!

Can I do something like this for group concate?

name1 (username1), name2 (username2), …

I have tried :

GROUP_CONCAT(user.name, ‘(’ + user.username + ‘)’)

but it doesn’t work.

Please help. Thanks.

2 
GROUP_CONCAT(
   CONCAT(user.name,' (',user.username,')')
   SEPARATOR ', '
            )
3

Thanks!