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Bob McKay
Bob McKay
5,814 Points
Posted by Bob McKay
Bob McKay
5,814 Points

Baffled by MySQL Create Table

Hi all,

I'm sure I'm doing something stupid (or not doing something smart!) but I'm baffled by a really simple step in the MySQL foundation course - I'm being asked to do the following:

Create a genres table called "t_genres" with an auto incrementing primary key called "pk_id" and a unique column called "uk_name" that can't be null. The "uk_name" is a varchar of up to 45 characters.

I am entering this:

CREATE TABLE t_genres (pk_id INTEGER AUTO_INCREMENT PRIMARY KEY, uk_name VARCHAR(45) NOT NULL)

But I'm getting this error returned (and I'm failing):

43df43e0-46c7-4f61-abf4-8a5d68595ae4.rb:38:in eval': wrong number of arguments (at least 1) (ArgumentError) from (eval):11:in<main>' from 43df43e0-46c7-4f61-abf4-8a5d68595ae4.rb:38:in eval' from 43df43e0-46c7-4f61-abf4-8a5d68595ae4.rb:38:in<main>'

Any ideas? Been banging my head against it for a while now!

Thanks

Bob

3 Answers

Bob McKay
Bob McKay
5,814 Points
Bob McKay
Bob McKay
5,814 Points

Sod it - completely missed the 'unique' specification.

Véronique Bellamy
Véronique Bellamy
20,810 Points

Is your issue resolved, hun?

Véronique Bellamy
Véronique Bellamy
20,810 Points
Véronique Bellamy
Véronique Bellamy
20,810 Points

I don't see anything wrong with your code but I did spruce it up a bit. Maybe try this?

CREATE TABLE t_genres (
    pk_id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
    uk_name VARCHAR(45) NOT NULL
);

Let me know if this works out for you. :)

Bob McKay
Bob McKay
5,814 Points
Bob McKay
Bob McKay
5,814 Points

Yes all sorted thanks Jessica, I was missing 'UNIQUE' from the SQL (I just didn't see it in the instructions - my coding was ok, it was my English comprehension at fault! :-D

Véronique Bellamy
Véronique Bellamy
20,810 Points

C'est la vie. ;)

Good luck in your adventures.