如何在蜂巢中对concat_ws（';'，collect_set（name））结果进行排序？

Question

如何查询查询结果的字母顺序？

select b6.S_Architect as S_Architect 
  from applications a
       left outer join
       (select id,concat_ws(';' , collect_set(name)) as S_Architect 
          from solution_architect
         group by parentcontentid
       ) b6 on a.id = b6.Id;

预期结果

Andy;Bravo;Cindy;David

实际结果

Cindy;Bravo;David;Andy

Answer 1

使用sort_array：

select concat_ws('\073',sort_array(collect_set(name))) from (select stack(4,'Cindy','Bravo','David','Andy') as name) s;

返回：

OK
Andy;Bravo;Cindy;David