insert into a (select * from b)和把记录取出来然后分别insert那个的效率高?

insert into a (select * from b)和把记录取出来然后分别insert那个的效率高? Set rs = cn.Execute(insert into data (tcp_data) values (' & a & ')) insert into a select * from b 和select * into a from b 这两个语句是不是一样的? ADO如何使用Insert into语法 ADO如何使用Insert into语法 INSERT INTO 语法两个String型变量 a,b 表message sqlStr=insert into message(aa,bb) value(a,b);怎样修改直接写a,b进去对么. Insert insert into 怎么使用insert into XXXX(a,b,c) values (d,e,f)这里的d,e,f在什么情况下要用什么符号进行括起来?比如'&&'什么的如果是出现在ASP里面的话呢 一个表insert into可以用where吗?两列循环读取第一列的值a,计算后分别插入第二列insert into table(column2) values(result) where column1=a这样insert into 后面可以带where吗? pleasr insert game compact disc into your drive 撒意思 英语翻译英语翻译汉语：Why talk to a clerk who might live in the neighborhood when you can just insert your card into the ATM 插入u盘时怎么出现please insert a disk into driver 我用的是xp啊！u盘没有驱动的光盘的啊！什么情况？ ORACL 异常：can bind a LONG value only for insert into a LONG column以下为异常信息：Caused by:java.sql.BatchUpdateException:ORA-01461:can bind a LONG value only for insert into a LONG column..严重:Servlet.service() for servlet default th sql中 insert 和 insert into 的区别有看到INSERT INTO TABLE VALUES('','',...)和INSERT TABLE (栏位1,栏位2...)VALUES ('','',...)请问各位有没人知道,这2种写法有什么区别吗? select Insert into和Insert into select的区别我现在是想把A表中的数据复制到B表中,但需要先看看B表中是否存在上条数据,不存在才插入,应该如何写呢?假如A表和B表中都 有a,b两个字段OleDbDataReader dr1 = please insert a U3 smart drive 数据库中select into from 和 insert into select的区别 create function aa(@upperid int)returns @t table (id int,upperid int,level int)asbegindeclare @i intset @i=1insert into @tselect *,@i from t where upperid=@upperidwhile @@rowcount>0beginset @i=@i+1insert into @tselect a.*,@i from t a left join @t b o