mysql - 插入触发器后插入数据到其他表

Question

I have two tables - 

League  (lg_id, lg_Userid, lg_JoinDate) 

这里，lg_id是PK，它的自动递增。

LeagueMember (lgMbr_lg_id, lgMbr_Userid, lgMbr_JoinDate) 

lgMbr_lb_id是FK引用League(lg_id)

一个行插入到联赛表后，对应的行应插入到leagueMember与插入联赛表中的同一lg_id。我正在尝试为此创建一个插入后触发器。

CREATE TRIGGER trigger_league AFTER INSERT ON `League` 
FOR EACH ROW 
BEGIN 
    INSERT INTO `LeagueMember` (`lgMbr_lg_id`, `lgMbr_Userid`,`lgMbr_JoinDate`) values (NEW.lg_id,NEW.lg_UserId,'2000-10-10') 
END; 

我试过这个，但它不起作用。这里有什么问题？

编辑 -

我收到一条错误消息，说我的语法有错误。基于这mysql create trigger reference page我甚至试过这个，但我仍然得到一个语法错误。

CREATE TRIGGER trigger_league AFTER INSERT ON `League` 
FOR EACH ROW 
BEGIN 
    INSERT INTO `LeagueMember` SET lgMbr_lg_id = NEW.lg_id;  
END; 

Answer 1

也许这可能有帮助？

drop table if exists league; 
create table league 
(
league_id smallint unsigned not null auto_increment primary key, 
user_id int unsigned not null, 
name varchar(255) unique not null 
) 
engine=innodb; 

drop table if exists league_user; 
create table league_user 
(
league_id smallint unsigned not null, 
user_id int unsigned not null, 
created_date datetime not null, 
creator_flag tinyint unsigned not null default 0, 
primary key (league_id, user_id) 
) 
engine=innodb; 


drop procedure if exists create_league; 
delimiter # 

create procedure create_league 
(
in p_user_id int unsigned, 
in p_name varchar(255) 
) 
begin 

declare v_league_id smallint unsigned default 0; 

    insert into league (user_id, name) values (p_user_id, p_name); 

    set v_league_id = last_insert_id(); 

    call add_league_user(v_league_id, p_user_id, 1); -- 1 = owner 
end # 

delimiter ; 

drop procedure if exists add_league_user; 
delimiter # 

create procedure add_league_user 
(
in p_league_id smallint unsigned, 
in p_user_id int unsigned, 
in p_creator_flag tinyint unsigned 
) 
begin 
    insert into league_user (league_id, user_id, created_date, creator_flag) values 
     (p_league_id, p_user_id, now(), p_creator_flag); 
end # 

delimiter ; 

call create_league(1,'Premiere League'); 

call add_league_user(1,2,0); 
call add_league_user(1,3,0); 
call add_league_user(1,4,0); 

select * from league; 
select * from league_user;