一尘不染

创建触发器-DECLARE时出错

sql

我从http://forge.mysql.com/wiki/Triggers学习触发器,
并且有:

create trigger bi_emps_fer before insert on emps for each row
begin

    declare newsal numeric default 0;
    declare namelength, l_loop int default 0;

    set namelength = length(new.emp_name);

    while l_loop < namelength do

       set newsal := newsal   new.salary;

       set l_loop := l_loop   1;

    end while;

    set new.salary = newsal;

end

和错误:

1064-您的SQL语法有误;检查与您的MySQL服务器版本相对应的手册以获取在第4行的’‘附近使用的正确语法

为什么?我使用MySQL 5.5.8和phpmyadmin 3.3.9


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2021-03-17

共1个答案

一尘不染

您是否指定了定界符?

delimiter #

create trigger bi_emps_fer before insert on emps for each row
begin

    declare newsal decimal(10,2) default 0;

    // do sql stuff here but not what you're doing !

    set new.salary = newsal;

end#

delimiter ;
2021-03-17