我正在尝试创建家庭作业项目所需的表格，并且遇到以下错误(使用000webhost)：

#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 '{

id INT(100) NOT NULL AUTO_INCREMENT,

userid INT(100) NOT NULL,

acctstatu' at line 2这里是实际的MySQL代码：

CREATE TABLE a9290616_hms.account

{

id INT(100) NOT NULL AUTO_INCREMENT,

userid INT(100) NOT NULL,

acctstatus TINYINT(1) NOT NULL,

primary key (id),

foreign key (userid) references users(userid)

} ENGINE = MYISAM

CREATE TABLE a9290616_hms.users

{

userid INT(100) NOT NULL AUTO_INCREMENT PRIMARY KEY,

fname VARCHAR(60) NOT NULL,

lname VARCHAR(60) NOT NULL,

acctid INT(100),

primary key (userid),

foreign key (acctid) references account(id)

} ENGINE = MYISAM

CREATE TABLE a9290616_hms.activities

{

topicid INT(100) NOT NULL AUTO_INCREMENT PRIMARY KEY,

startdate DATE NOT NULL,

userid INT(100) NOT NULL,

primary key (topicid),

foreign key (userid) references users(userid)

} ENGINE = MYISAM

CREATE TABLE a9290616_hms.network

{

groupid INT(100) NOT NULL AUTO_INCREMENT PRIMARY KEY,

startdate DATE NOT NULL,

userid INT(100) NOT NULL,

primary key (groupid),

foreign key (userid) references users(userid)

} ENGINE = MYISAM

CREATE TABLE a9290616_hms.profile

{

userstatus VARCHAR(100),

description VARCHAR(255),

userid INT(100),

foreign key (userid) references users(userid)

} ENGINE = MYISAM

CREATE TABLE a9290616_hms.submissions

{

subid INT(100) NOT NULL AUTO_INCREMENT PRIMARY KEY,

content VARCHAR(255) NOT NULL,

topicid INT(100) NOT NULL,

primary key (subid),

foreign key (topicid) references activities(topicid)

} ENGINE = MYISAM

CREATE TABLE a9290616_hms.comments

{

commid INT(100) NOT NULL AUTO_INCREMENT PRIMARY KEY,

content VARCHAR(255) NOT NULL,

startdate DATE NOT NULL,

subid INT NOT NULL,

primary key (commid),

foreign key (subid) references submissions(subid)

} ENGINE = MYISAM如果有人能指出我做错了什么，那会很好。

提前致谢。