我们可以使用RECUSRSIVITY、WITH CTE、union ALL，如下所示

declare @mytable as table(id int identity(1,1), str nvarchar(100))
insert into @mytable values('Peter'),('Paul'),('Mary')

declare @myresult as table(id int,str nvarchar(max),ind int, R# int)

;with cte as(select id,cast(str as nvarchar(100)) as str, cast(0 as int) ind from @mytable
union all
select t2.id,cast(t1.str+',' +t2.str as nvarchar(100)) ,t1.ind+1 from cte t1 inner join @mytable t2 on t2.id=t1.id+1)
insert into @myresult select *,row_number() over(order by ind) R# from cte

select top 1 str from @myresult order by R# desc

我真的很喜欢Dana回答的优雅，只想让它变得完整。

DECLARE @names VARCHAR(MAX)
SET @names = ''

SELECT @names = @names + ', ' + Name FROM Names

-- Deleting last two symbols (', ')
SET @sSql = LEFT(@sSql, LEN(@sSql) - 1)

SELECT PageContent = Stuff(
    (   SELECT PageContent
        FROM dbo.InfoGuide
        WHERE CategoryId = @CategoryId
          AND SubCategoryId = @SubCategoryId
        for xml path(''), type
    ).value('.[1]','nvarchar(max)'),
    1, 1, '')
FROM dbo.InfoGuide info

使用此项：

ISNULL(SUBSTRING(REPLACE((select ',' FName as 'data()' from NameList for xml path('')), ' ,',', '), 2, 300), '') 'MyList'

其中“300”可以是任何宽度，考虑到您认为将显示的最大项目数。

使用“TABLE”类型非常容易。让我们假设您的表名为Students，并且它具有列名。

declare @rowsCount INT
declare @i INT = 1
declare @names varchar(max) = ''

DECLARE @MyTable TABLE
(
  Id int identity,
  Name varchar(500)
)
insert into @MyTable select name from Students
set @rowsCount = (select COUNT(Id) from @MyTable)

while @i < @rowsCount
begin
 set @names = @names + ', ' + (select name from @MyTable where Id = @i)
 set @i = @i + 1
end
select @names

此示例使用SQL Server 2008 R2进行了测试。

你需要创建一个变量来保存你的最终结果并选择它，就像这样。

最简单的解决方案

DECLARE @char VARCHAR(MAX);

SELECT @char = COALESCE(@char + ', ' + [column], [column]) 
FROM [table];

PRINT @char;