Допустим есть

select 1 as id, 'param_1' as name from dual
union all
select 1 as id, 'param_2' as name from dual
union all
select 1 as id, 'param_3' as name from dual
union all
select 2 as id, 'param_2' as name from dual
union all
select 2 as id, 'param_4' as name from dual


Нужно получить результат в виде
ID NAME
1 param_1,param_2,param_3
2 param_2,param_4