Listagg, wm_concat or Group_concat equivalent in teradata - forum topic by jsamantarai

I want to aggregate as "comma-separated values" within a "group by", like MYSQL group_concat:

SELECT dept, GROUP_CONCAT(ename) as employees FROM EMP GROUP BY dept;
or ORACLE listagg:
select dept, listagg(ename, ',') within group (order by ename) as employees ..
What the equivalent SQL syntax  in teradata.