从一个表中插入表的问题

数据库data里有一个表为table123,在2006-10-01做了备份,mysqldump data -u zeng -p >/tmp/20061001
用select *  into outfile "/tmp/20061001-1101" from table123 where startime>= "20061001" and startime<"20061101";
select *  into outfile "/tmp/20061101-1201" from table123 where startime> ="20061101" and startime<"20061201";

现在我要我想做的是,把20061001这个备份,先还原mysql data -u zeng -p </tmp/20061001之后,分别把表table123在11月和12月这两个表插入到data里的table123
insert into这个命令怎么一次插进几万条记录呀?