新手写mysql，不知道哪里写错了，报error#:1064。

[披着虎皮的石头]

CREATE DEFINER = `root`@`localhost` PROCEDURE `NewProc`(IN `@make_date` varchar)
begin
SET @make_date ='2012-10-10'
end;

mySQL error#: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 1

[wwwwb]

delimiter $$
CREATE PROCEDURE `NewProc`(IN `@make_date` varchar)
begin
SET @make_date ='2012-10-10'
end $$
delimiter ;

[Rotel-刘志东]

具体mysql版本
show version;
delimiter$$
create procedure NewProc(IN @make_date varchar)
begin
set @make_date='2010-10-10'
end $$
delimiter;