Question

Here is my problem:

This is the current result:

    |   Name   |  Alias  |   Role   |
        mark       mak       User
        mark       mak       Admin

This is the wanted result:

    |   Name   |  Alias  |    Role    |
        mark       mak     User, Admin

Can this be possible with SQL(using Oracle and Java EE/JPA/Hibernate right now)?

Answer 1

GROUP_CONCAT is a MySQL function.

Here is the SQL for Oracle:

  SELECT Name, LISTAGG(Role, ',') WITHIN GROUP (ORDER BY Role) AS Roles
    FROM Your_Table
GROUP BY Name;