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 SEL
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',1UNION ALL SELECT '001', 'bb',2UNION ALL SELECT '002', 'aaa',4UNION ALL SELECT '002', 'bbb',5UNION 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XMLSELECT code, data=STUFF((SELECT ','+[values] FROM test t WHERE code=t1.code FOR XML PATH('')), 1, 1, ''),sum([count]) as [count]FROM test t1GROUP BY code --查询结果--001 aa,bb 3--002 aaa,bbb,ccc 12 drop table test
