复制代码 代码如下:

--创建 test 表 ，插入数据

CREATE TABLE test(code varchar(50), [values] varchar(10),[count] int)
INSERT test SELECT \'001\', \'aa\',1
UNION ALL SELECT \'001\', \'bb\',2
UNION ALL SELECT \'002\', \'aaa\',4
UNION ALL SELECT \'002\', \'bbb\',5
UNION ALL SELECT \'002\', \'ccc\',3;

 

--方法一
--将多行合并成一行，并做分组统计
SELECT code,
       [values] =
       stuff(b.[values].value(\'/R[1]\', \'nvarchar(max)\'),
,
,
             \'\'),[count]
  FROM (SELECT  code,sum([count]) as [count]
          FROM test
         GROUP BY code) a
 CROSS apply (
        SELECT [values] =(
            SELECT N\',\' + [values] FROM test
              WHERE code = a.code
                         FOR XML PATH(\'\'), ROOT(\'R\'), TYPE
        )
) b;

 

--方法二

---SQL2005中的新解法   使用XML

SELECT code, data=STUFF((SELECT \',\'+[values] FROM test t WHERE code=t1.code FOR XML PATH(\'\')), 1, 1, \'\'),sum([count]) as [count]
FROM test t1
GROUP BY code

 

--查询结果

--001    aa,bb    3
--002    aaa,bbb,ccc    12

 

drop table test