MySQL ошибка создания таблицы

Question

CREATE DATABASE IF NOT EXISTS UNIVERSITY; 

USE UNIVERSITY; 

CREATE TABLE IF NOT EXISTS STUDENT 
    ( 
    STUDENT_NO VARCHAR(25) NOT NULL UNIQUE, 
    STUDENT_NAME VARCHAR(255), 
    ADDRESS  VARCHAR(255), 
    YEAR_STUDY INT, 
    SEX   VARCHAR(5), 
    DATE_OF_BIRTH DATE, 
    COURSE_NO  VARCHAR(10), 
    PRIMARY KEY(STUDENT_NO) 
) 
ENGINE=INNODB; 

CREATE TABLE IF NOT EXISTS SUBJECT 
    ( 
    SUBJECT_NO VARCHAR(10) NOT NULL UNIQUE, 
    SUBJECT_NAME VARCHAR(255), 
    DEPT_NAME VARCHAR(255), 
    PRIMARY KEY(SUBJECT_NO) 
) 
ENGINE=INNODB; 

CREATE TABLE IF NOT EXISTS RESULTS 
    ( 
    STUDENT_NO VARCHAR(25) NOT NULL UNIQUE, 
    SUBJECT_NO VARCHAR(25) NOT NULL UNIQUE, 
    YEAR_EXAM INT, 
    MARKS  INT, 
    PRIMARY KEY(STUDENT_NO, SUBJECT_NO), 
    FOREIGN KEY(STUDENT_NO) REFERENCES STUDENT(STUDENT_NO), 
    FOREIGN KEY(SUBJECT_NO) REFERENCES SUBJECT(SUBJECT_NO) 
) 
ENGINE=INNODB; 

CREATE TABLE IF NOT EXISTS COURSE 
    ( 
    COURSE_NO VARCHAR(10) NOT NULL UNIQUE, 
    TITLE  VARCHAR(255), 
    DURATION INT, 
    PRIMARY KEY(COURSE_NO) 
) 
ENGINE=INNODB; 

CREATE TABLE IF NOT EXISTS COURSE_SUB 
    ( 
    COURSE_NO VARCHAR(10) NOT NULL UNIQUE, 
    SUBJECT_NO VARCHAR(10) NOT NULL UNIQUE, 
    PRIMARY KEY(COURSE_NO, SUBJECT_NO), 
    FOREIGN KEY(COURSE_NO) REFERENCES COURSE(COURSE_NO), 
    FOREIGN KEY(SUBJECT_NO) REFERENCES SUBJECT(SUBJECT_NO) 
) 
ENGINE=INNODB; 

я создаю базу данных, но она имеет некоторые ошибки я не могу найти то, что ошибка

пожалуйста, помогите

Answer 1

Вы пропускаете запятую между Year_Exam int и Marks int и между foreign key(Student_No) references Student(Student_No) и foreign key(Subject_No) references Subject(Subject_No)

Что-то вроде

create table IF NOT EXISTS 
results( 
    Student_No varchar(25) not null unique, 
    Subject_No varchar(25)not null unique, 
    Year_Exam int, 
    Marks int, 
    primary key(Student_No,Subject_No), 
    foreign key(Student_No) references Student(Student_No) , 
    foreign key(Subject_No) references Subject(Subject_No) 
)engine=innodb; 

Answer 2

Заменить «результат» таблица запрос с этим

create table IF NOT EXISTS results(Student_No varchar(25) not null unique, Subject_No varchar(25)not null unique, Year_Exam int, Marks int, 
primary key(Student_No,Subject_No), 
foreign key(Student_No) references Student(Student_No),foreign key(Subject_No) references Subject(Subject_No))engine=innodb; 

Answer 3

попробовать этот

CREATE DATABASE IF NOT EXISTS UNIVERSITY; 

USE UNIVERSITY; 

CREATE TABLE IF NOT EXISTS STUDENT 
( 
STUDENT_NO VARCHAR(25) NOT NULL UNIQUE, 
STUDENT_NAME VARCHAR(255), 
ADDRESS  VARCHAR(255), 
YEAR_STUDY INT, 
SEX   VARCHAR(5), 
DATE_OF_BIRTH DATE, 
COURSE_NO  VARCHAR(10), 
PRIMARY KEY(STUDENT_NO) 
) 
ENGINE=INNODB; 

CREATE TABLE IF NOT EXISTS SUBJECT 
( 
SUBJECT_NO VARCHAR(10) NOT NULL UNIQUE, 
SUBJECT_NAME VARCHAR(255), 
DEPT_NAME VARCHAR(255), 
PRIMARY KEY(SUBJECT_NO) 
) 
ENGINE=INNODB; 

CREATE TABLE IF NOT EXISTS RESULTS 
( 
STUDENT_NO VARCHAR(25) NOT NULL UNIQUE, 
SUBJECT_NO VARCHAR(25) NOT NULL UNIQUE, 
YEAR_EXAM INT, 
MARKS  INT, 
PRIMARY KEY(STUDENT_NO, SUBJECT_NO), 
FOREIGN KEY(STUDENT_NO) REFERENCES STUDENT(STUDENT_NO), 
FOREIGN KEY(SUBJECT_NO) REFERENCES SUBJECT(SUBJECT_NO), 
) 
ENGINE=INNODB; 

CREATE TABLE IF NOT EXISTS COURSE 
( 
COURSE_NO VARCHAR(10) NOT NULL UNIQUE, 
TITLE  VARCHAR(255), 
DURATION INT, 
PRIMARY KEY(COURSE_NO) 
) 
ENGINE=INNODB; 

CREATE TABLE IF NOT EXISTS COURSE_SUB 
( 
COURSE_NO VARCHAR(10) NOT NULL UNIQUE, 
SUBJECT_NO VARCHAR(10) NOT NULL UNIQUE, 
PRIMARY KEY(COURSE_NO, SUBJECT_NO), 
FOREIGN KEY(COURSE_NO) REFERENCES COURSE(COURSE_NO), 
FOREIGN KEY(SUBJECT_NO) REFERENCES SUBJECT(SUBJECT_NO) 
) 
ENGINE=INNODB;