Sql selectgroupbyおよびstringconcat

これはsql-server2008で機能します

SELECT p1.ID,
       ( SELECT NAME + ' and ' 
           FROM YourTable  p2
          WHERE p2.ID = p1.ID
          ORDER BY NAME
            FOR XML PATH('') ) AS Name,
        sum(Amount)
      FROM YourTable p1
      GROUP BY ID ;