一列中的子查询结果？ PostgreSQL

Question

我想知道是否有办法在查询的一列中获取子查询的多个结果... 像这样：

otherid | resultsFromsomeData
1       | 1,2,3   
2       | 1,5  
3       | No Data

我正在尝试这样的事情：

select o.otherID, 
CASE WHEN (select otherID from someData where someid=o.otherID)>1 THEN
       ''||(select otherID from someData where someid=o.otherID)||'' /*here I am*/
   WHEN (select otherID from someData where someid=o.otherID)<1 THEN
       'No Data'
   END 
as resultsFromsomeData
from OtherData o

Answer 1

看起来像一个简单的加入和分组依据：

select o.other_id, 
       coalesce(string_agg(sd.other_id, ','), 'No data') as results_from_some_data
from other_data o
  join some_data d on o.other_id = d.someid
group by o.other_id;

一列中的子查询结果？ PostgreSQL

Results of Sub query in one column? Postgresql

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