Where is the syntax error in this piece of sql code I wrote in themysql workbench?

Question

This is a very simple piece of code using which I am trying to create a table of an entity Bank.

create table bank (
banknum integer(5) NOT NULL,
bankname varchar(20) NOT NULL,
primary key(banknum));

However, executing this gives an error:

Error Code: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'create table bank ( banknum integer(5) NOT NULL, bankname varchar(20) NOT NULL, ' at line 1

I do not understand where this syntax error is occurring.

Answer 1

create table bank (
banknum INT(5) UNSIGNED AUTO_INCREMENT PRIMARY KEY,
bankname VARCHAR(20) NOT NULL);