sqlserver sql语句遍历表数据

--创建表test
IF  EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[test]') AND type in (N'U'))
DROP TABLE [dbo].[test]
CREATE TABLE [dbo].[test](
	[id] [int] IDENTITY(1,1) NOT NULL,
	[c1] [nvarchar](50) COLLATE Chinese_PRC_CI_AS NULL,
	[c2] [nvarchar](50) COLLATE Chinese_PRC_CI_AS NULL
) ON [PRIMARY]

--初始化test 表数据 1条
declare @j int
set @j=0;
while(@j<10)
begin
	insert into test(c1,c2)values('c1'+cast(@j as nvarchar(10)),'c2'+cast(@j as nvarchar(10)))
	set @j=@j+1
end


--查询数据到临时表 生成有序index列 用于后面遍历
select row_number() over(order by c1 desc) as 'rowindex',* into #test_temp from test 

--遍历数据表test中的数据
declare @i int,@flag int
select @flag=count(rowindex)+1 from #test_temp
set @i=1
declare @v1 nvarchar(50),@v2 nvarchar(50)
while(@i<@flag)
begin
	select @v1=c1,@v2=c2 from #test_temp where rowindex=@i
	print @v1+'---'+@v2
	set @i=@i+1;
end

--删除临时表(一定要删除否则会占用系统内存)
drop table #test_temp