SQL Server中如何实现遍历表的记录

SQL Server遍历表一般都要用到游标，SQL Server中可以很容易的用游标实现循环，实现SQL Server遍历表中记录。
但游标在实际的开发中都不推荐使用。
我们知道还可以借助临时表或表变量等来实现SQL Server遍历表
下例为用表变量来实现简单的循环:
(直接复制到查询分析器中运行即可)

declare @temp table

(

[id] int IDENTITY(1,1),

[Name] varchar(10)

)

declare @tempId int,@tempName varchar(10)

insert into @temp values('a')

insert into @temp values('b')

insert into @temp values('c')

insert into @temp values('d')

insert into @temp values('e')

select * from @temp

WHILE EXISTS(select [id] from @temp)

begin

SET ROWCOUNT 1

select @tempId = [id],@tempName=[Name] from @temp

SET ROWCOUNT 0

delete from @temp where [id] = @tempId

print 'Name:----'+@tempName

end

附上另外一种sql 测试代码：

declare @temp table (
[id] int IDENTITY(1,1),
[Name] varchar(10) )
declare @tempId int,@tempName varchar(10) ,@tempcount int
insert into @temp values('a')
insert into @temp values('b')
insert into @temp values('c')
insert into @temp values('d')
insert into @temp values('e')

set @tempcount=(select COUNT(*) from @temp);
set @tempId=0;

while (@tempId<=@tempcount )
begin
set @tempName=(select name from @temp where id=@tempId);

print 'the id is :'+str(@tempId) +' the name is : '+@tempName;
set @tempId=@tempId+1;

end

测试结果如下：

the id is :         1 the name is :  a

the id is :         2 the name is :  b

the id is :         3 the name is :  c

the id is :         4 the name is :  d

the id is :         5 the name is :  e