从csv导入MySQL时缺少int值

Question

I'm currently building a database that works with helping students build a class schedule. I've "succeeded" in importing two of the three columns using a csv file but I'm having issues importing the ID numbers for the fields the classes are apart of. I think it has something to do with the ID being a int file, since the other two columns are varchar's. But having the column be int makes the rest of my project incredibly easy...

A small portion of the csv file reads:

1,AFAM,2000
1,AFAM,3150
1,PSYC,3150
1,AFAM,3880
1,AFAM,4200
2,POLS,4200
2,AFAM,4490
2,AFAM,6490
2,DRAM,4490
2,DRAM,6490
2,AFAM,4500

Then I use this in MySQL:

LOAD DATA local INFILE 'Course_Requirements.csv' INTO TABLE Courses
FIELDS TERMINATED BY ','
LINES TERMINATED BY '\n';

When I go SELECT * FROM COURSES; to view my table it shows up like this:

ID  |  ClassName  |  ClassNumber
    |  AFAM       |  2000
    |  AFAM       |  3150
    |  PSYC       |  3150
    |  AFAM       |  3880
    |  AFAM       |  4200
    |  POLS       |  4200
    |  AFAM       |  4490
    |  AFAM       |  6490
    |  DRAM       |  4490
    |  DRAM       |  6490
 2  |  AFAM       |  4500

I honestly have no idea why the IDs aren't showing up...

Answer 1

Make sure the ID column in Courses is not primary key or unique. If not you cannot have duplicates. execute:

SHOW CREATE TABLE Courses

and look at the properties of the ID column