oracle相当于hive collect_set函数

Question

以下hive查询的oracle等价物是什么？

select appn_id,collect_set(CONCAT(upper(TRIM(dcsn_type_nm)),':',upper(TRIM(dcsn_outcm_nm))))
 FROM  <left join between few tables>
 group by appn_id  

编辑：

根据戈登的回答更新 -

select appn_id,listagg(upper(trim(dcsn_type_nm)) || ':' || upper(trim(dcsn_outcm_nm))) within group (order by null) set_type_outcm_nm
 FROM  <left join between few tables>
 group by appn_id  

Answer 1

我认为使用它的方式相当于listagg()：

select listagg(upper(trim(dcsn_type_nm)) || ':' || upper(trim(dcsn_outcm_nm))) with group (order by null)

listagg()是一个聚合函数，因此它组合了来自多行的数据。