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create table nametable( nameguid uniqueidentifier, name nvarchar(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
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原文地址:http://www.cnblogs.com/lideqiang/p/4474366.html