创建触发器 - DECLARE 时出错
我从 http://forge.mysql.com/wiki/Triggers 学习触发器我有:
i learn triggers from http://forge.mysql.com/wiki/Triggers and i have:
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 语法有错误;检查手册对应于您的 MySQL 服务器使用正确语法的版本在第 4 行的 '' 附近
1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 4
为什么?我使用 MySQL 5.5.8 和 phpmyadmin 3.3.9
why? i use MySQL 5.5.8 and phpmyadmin 3.3.9
推荐答案
您是否指定了分隔符?
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 ;
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