SQL：期望得到一個符號名稱

Question

試圖在數據庫中實現這一點，到目前爲止，所有其他類似的工作已經奏效。

create table participation (
    team_id int(11) not null, 
    driver_id int(11) not null, 
    race_id int(11) not null, 
    points_earned int(11), 
constraint part_pk primary key (team_id, driver_id, race_id), 
constraint part_fk foreign key (team_id) references team (team_id) ON update cascade, 
constraint part_fktwo foreign key (driver_id) references driver (driver_id) ON update cascade, 
constraint part_fkthree foreign key (race_id) references race (race_id) ON update cascade, 
) 
engine=innodb; 

在最後一個括號處出現錯誤。

Answer 1

你有一個額外的逗號在查詢（最後一個外鍵約束）的結尾：

create table participation (
    team_id int(11) not null, 
    driver_id int(11) not null, 
    race_id int(11) not null, 
    points_earned int(11), 
    constraint part_pk primary key (team_id, driver_id, race_id), 
    constraint part_fk foreign key (team_id) references team (team_id) ON update cascade, 
    constraint part_fktwo foreign key (driver_id) references driver (driver_id) ON update cascade, 
    constraint part_fkthree foreign key (race_id) references race (race_id) ON update cascade 
) 
engine=innodb;