sql 中对分组的信息进行聚合。(sql server 2005)
时间:2010-08-20 来源:空紫竹

select 1 id, 'Child1' child
union
select 1 id, 'Child2'
union
select 1 id, 'Child3'
union
select 2 id, 'Child1'
union
select 2 id, 'Child2'
)
select id, stuff((select ','+child
from t a
where b.id = a.id
for xml path('')),1,1,'') children
from t b group by id
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