关于数据循环的一个问题
我的数据库是这样的: 
 id   field1 
 -------------- 
 5         张三,2005-01-01 
 6         a,qer 
 7         b   kk 
 8         cdd 
 9         李四,2005-1-8 
 10         agr[fg0) 
 11         dhg 
 12         e3y 
 13         王五,2005-3-9 
 15         fhg 
 16         guy   
 现在要把日期插入到field1的每一行的开头,按照ID顺序进行。即结果如下 
 id   field1   field2 
 -------------- 
 5         张三,      2005-01-01 
 6         a,qer         2005-01-01 
 7         b   kk         2005-01-01 
 8         cdd         2005-01-01 
 9         李四,2005-1-8 
 10         agr[fg0)         2005-1-8 
 11         dhg         2005-1-8 
 12         e3y         2005-1-8 
 13         王五,2005-3-9 
 15         fhg         2005-3-9 
 16         guy         2005-3-9   
 最好不用游标,请大家帮忙解决一下啊。速度要快一点的
------解决方案--------------------create table T(id int, field1 varchar(50) collate CHINESE_PRC_CS_AI_WS) 
 insert T select 5,    '张三,2005-01-01 ' 
 union all select 6,    'a,qer ' 
 union all select 7,    'b kk ' 
 union all select 8,    'cdd ' 
 union all select 9,    '李四,2005-1-8 ' 
 union all select 10,    'agr[fg0) ' 
 union all select 11,    'dhg ' 
 union all select 12,    'e3y ' 
 union all select 13,    '王五,2005-3-9 ' 
 union all select 15,    'fhg ' 
 union all select 16,    'guy '   
 declare @dt table(id int, field1 varchar(50), field2 datetime) 
 declare @id int, @field1 varchar(50), @field2 datetime  
 declare cur cursor local 
 for 
 select id, field1 from T   
 open cur 
 fetch next from cur into @id, @field1 
 while @@fetch_status=0 
 begin 
 	if charindex( ', ', @field1 collate CHINESE_PRC_CS_AI_WS)> 0 
 	begin 
 		set @field2=right(@field1, len(@field1)-charindex( ', ', @field1)) 
 		set @field1=left(@field1, charindex( ', ', @field1)) 
 	end    	 
 	insert @dt select @id, @field1, @field2   
 	fetch next from cur into @id, @field1 
 end 
 close cur 
 deallocate cur   
 select * from @dt   
 --result 
 id          field1                                             field2                                                  
 ----------- -------------------------------------------------- ------------------------------------------------------  
 5           张三,                                                2005-01-01 00:00:00.000 
 6           a,qer                                              2005-01-01 00:00:00.000 
 7           b kk                                               2005-01-01 00:00:00.000 
 8           cdd                                                2005-01-01 00:00:00.000 
 9           李四,                                                2005-01-08 00:00:00.000 
 10          agr[fg0)                                           2005-01-08 00:00:00.000 
 11          dhg                                                2005-01-08 00:00:00.000 
 12          e3y                                                2005-01-08 00:00:00.000 
 13          王五,                                                2005-03-09 00:00:00.000 
 15