第一个存储过程

BEGIN
    #Routine body goes here...
    DECLARE vec_title VARCHAR(50) DEFAULT "";
    DECLARE vec_content VARCHAR(2000) DEFAULT "";
    DECLARE int_attach_id INT DEFAULT 0;
    DECLARE date_send_time DATETIME;
    DECLARE  _DONE int default 0;  
      
    DECLARE cur CURSOR FOR 
            SELECT title, content, attach_id, send_time FROM all_server_mail WHERE id IN(SELECT all_server_mail_id FROM user_unreceived_mail WHERE user_id = inUserID );
    DECLARE CONTINUE HANDLER FOR SQLSTATE '02000' SET _DONE = 1;#错误定义，标记循环结束
    OPEN cur;
    #插入user_mail表
    REPEAT
        FETCH cur INTO vec_title, vec_content, int_attach_id, date_send_time;
        IF NOT _DONE THEN
            INSERT INTO `user_mail`(`user_id`, `send_time`, `title`, `content`, `attach_id`, `status`) VALUES(inUserID, date_send_time, vec_title, vec_content, int_attach_id, 0);
        END IF;
    UNTIL _DONE END REPEAT;
    CLOSE cur;
    
    #清空user_unreceived_mail表中该玩家记录
    DELETE FROM user_unreceived_mail WHERE `user_id` = inUserID;

END

终于写对了一个存储过程