[SQLServer]将多条记录的一个字段进行连接

for xml path('root')

select tt.organization_id, left(list,len(list)-1) from ( 
  select t.organization_id,(
    select cast(party_id as varchar) + ',' 
      from hrs_employee for xml path('') 
  ) as list 
  from hrs_employee t group by t.organization_id
) tt

1    0,0,1,1,8000001000002,8000001000003
99   0,0,1,1,8000001000002,8000001000003