SQL合并行

表名:UserDuty

id    Name    Dsp    level

1	Designer	1	1
2	Coder	1	2
3	Coder	2	3
4	Coder	3	4
5	Designer	2	0
NULL	NULL	NULL	NULL

// 合并数值

Create FUNCTION dbo.f_sum(@name varchar(100))
RETURNS int
AS
BEGIN
    DECLARE @r int
    SET @r = 0
    SELECT @r = @r + [level]
    FROM UserDuty
    WHERE [Name]=@name
    RETURN @r
END
GO

// 合并行字符串

Create FUNCTION dbo.f_str(@name varchar(100))
RETURNS varchar(8000)
AS
BEGIN
    DECLARE @r varchar(8000)
    SET @r = ''
    SELECT @r = @r+',' + rtrim([Dsp])
    FROM UserDuty
    WHERE [Name]=@name
    RETURN STUFF(@r, 1, 1, '')
END
GO

// 调用函数

SELECT [Name], [Dsp]=dbo.f_str([Name]) ,[level]=dbo.f_sum([Name])
FROM UserDuty
GROUP BY [Name]