sql不使用游标遍历表数据

10) ) insert into nametable(nameguid,name) values(newid(),‘lide‘) insert into nametable(nameguid,name) values(newid(),‘lideqiang‘) insert into nametable(nameguid,name) values(newid(),‘liqiang‘) set rowcount 1 select * from nametable

set rowcount的作用是使 SQL Server在返回指定的行数之后停止处理查询。

输出结果：

　　

实现表遍历：

declare @nameguid uniqueidentifier

declare @name nvarchar(10)

while exists (select * from nametable)

begin

set rowcount 1

select @nameguid = nameguid from nametable

select @name = name from nametable where nameguid = @nameguid

set rowcount 0

delete from nametable where nameguid = @nameguid

print @name

end

不过这样操作会删除表中的数据，可以在临时表中操作

select * into #nametable from nametable

 

sql不使用游标遍历表数据

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