MySQL创建数据库出错

create table group(
'gid' INT (11) not NULL, 
'gname' VARCHAR (200) not NULL, 
'gadmin' INT (11) not NULL, 
 PRIMARY KEY('gid')
)ENGINE = MyISAM DEFAULT = GBK;

create table 'ugroup'(
'gid' int(11) not NULL, 
'gname' varchar(200) not NULL, 
'gadmin' int(11) not NULL, 
 primary key ('gid')
)ENGINE = MyISAM DEFAULT = GBK;

CREATE TABLE `ugroup`(
`gid` INT(11) NOT NULL PRIMARY KEY, 
`gname` VARCHAR(200) NOT NULL, 
`gadmin` INT(11) NOT NULL
)ENGINE = MYISAM DEFAULT CHARSET=GBK;