How to make primary key auto increment using query

Question

CREATE TABLE Persons
(
ID int NOT NULL AUTO_INCREMENT,
LastName varchar(255) NOT NULL,
FirstName varchar(255),
Address varchar(255),
City varchar(255),
PRIMARY KEY (ID)
)

Answer 1

above query is correct

Answer 2

create table <table_name>
(id INT AUTO_INCREMENT PRIMARY KEY
,first_name VARCHAR(255));
alternate syntax when we are not creating composite primary key.