mysql 循环游标老是多一行

[weiryou10]

原数据库里面有一张customers表，有7行数据，学习到游标这，想写一个储存过程，创建一张新表，将cust_name每次使用游标读出来并添加到新表中去，这是原表的数据：

这是储存过程：

create procedure uu()
    -> begin
    -> declare o int;
    -> declare u char(50);
    -> declare done boolean default 0;
    -> declare hh cursor for select cust_name from customers;
    -> declare continue handler for not found set done = 1;
    -> open hh;
    -> create table bb(cust_name char(50) not null);
    -> repeat
    -> fetch hh into u;
    -> insert into bb(cust_name) values(u);
    -> until done end repeat;
    -> close hh;
    -> end //

调用储存过程后，发现多了一行，请问这个肿么破:

[ACMAIN_CHM]

create procedure uu() -> begin -> declare o int; -> declare u char(50); -> declare done boolean default 0; -> declare hh cursor for select cust_name from customers; -> declare continue handler for not found set done = 1; -> open hh; -> create table bb(cust_name char(50) not null); -> repeat -> fetch hh into u; if done=1 then ... -> insert into bb(cust_name) values(u); -> until done end repeat; -> close hh; -> end //