Question

insert into user 
    (account_id, name, e_mail_addr)
select account_id, name, e_mail_addr
from user
where account_id='1';

如何复制id = id +1的行并循环100次。这意味着它将创建100行，id为2到100。我在phpmyadmin中使用它

Answer 1

SQL过程：

drop procedure if exists user_clone;
delimiter #

create procedure user_clone()
begin

    declare u_max int unsigned default 100;
    declare u_counter int unsigned default 0;

    start transaction;
    while u_counter < u_max do
        INSERT INTO (name, e_mail_addr)
            SELECT name, e_mail_addr
            FROM user 
            WHERE account_id = 1;

        set u_counter=u_counter+1;
    end while;
    commit;
end #

delimiter ;

call user_clone();
drop procedure user_clone;

使用account_id = account_id1复制行？

1 个答案: