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Development Tools Database Foundations Joining Relational Data Between Tables in SQL Keys and Auto-Incrementing Values

Álvaro Massana
Álvaro Massana
14,142 Points
Posted by Álvaro Massana
Álvaro Massana
14,142 Points

Challenge Task 1

I'm stuck at the first task of the challenge...

What they ask: "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."

What I did:

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

The error message says: " Bummer! You're missing the PRIMARY KEY of 'pk_id'."

Do you see what I'm doing wrong?

Thank you in advance for your help.

2 Answers

Jeremy Faith
PLUS
Jeremy Faith
Courses Plus Student 56,696 Points
Jeremy Faith
Jeremy Faith
Courses Plus Student 56,696 Points

You need to declare the PRIMARY KEY type, which is INTEGER. So add INTEGER after pk_id and you should be fine.

Álvaro Massana
Álvaro Massana
14,142 Points
Álvaro Massana
Álvaro Massana
14,142 Points

Great, it worked! Thank you!