在選擇列表中得到錯誤無效，因為它不包含在聚合函數或GROUP BY子句中

Question

嗨，我是Sql的新手，我有這樣的表

ID  | Name
   1    a
   2    a
   3    h
   4    e
   5    d
   6    d

想要的輸出應該是

  name  | IDS
   a    1,2
   d    5,6

我嘗試過但拋出錯誤

select distinct  ID, (select CAST(t.ID AS VARCHAR(10)) +','
            from tbl t
            where t.ID=tb.ID
            for xml path('')) name
from tbl tb
group by name

以下錯誤：

invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause

有人可以建議我問一下嗎，請提前謝謝

Answer 1

如果您使用的是MySQL

select name, group_concat(t.id)
from tbl tb
group by name
having count(*) > 1;

在SQL Server中：

select name, 
       stuff((select ',' + CAST(t.ID AS VARCHAR(255))
              from tbl t
              where t.name = tb.name
              for xml path('')
             ), 1, 1, '') name
from tbl tb
group by name
having count(*) > 1;