mysql申明变量出现错误~~~~~求救~~~~~

[wcnqrm]

create procedure pro_wjntest()
begin
DECLARE tmpName varchar(20) default '';
end;

在用heidiSQL里运行，会出现/* SQL Error: 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 'varchar(20) default ''' at line 3 */错误，mysql里面的声明变量不是这样么？搞了一个下午，头大了，请大虾们赐教下！！！！

[vipper23]

delimiter $$
create procedure pro_wjntest()
begin
DECLARE tmpName varchar(20) default '';
end;
$$
delimiter ;

[wwwwb]

在MYSQL命令行下
delimiter $$
create procedure pro_wjntest()
begin
DECLARE tmpName varchar(20) default '';
end$$
delimiter ;