sql server 建临时表修改数据

/********************MC_User即为用户信息表************************/

declare @count int
declare @index int
declare @tmpID int
declare @tmpUserPassword nvarchar(50)

declare @tmpTable table
(
 Inde int identity(1,1),
 ID int,
 UserPassword nvarchar(50)
)

insert into @tmpTable select a.ID,a.UserPassword from MC_User a

set @count=@@ROWCOUNT
set @index=1
while @index<=@count
begin
 select @tmpID= ID,@tmpUserPassword= UserPassword from @tmpTable where Inde=@index
 update MC_User set UserPassword=UPPER(@tmpUserPassword)
 where ID=@tmpID
 
 set @index=@index+1
end