PRIMARY KEY definition in MySQL CREATE TABLE statement

Question

What\'s the difference between this code:

CREATE TABLE samples (
  sampleid INT(11) NOT NULL AUTO_INCREMENT,
  sampledate DATE NOT NULL,
  location VARCHAR(25) N         


        

Answer 1

They are literally the same. Here is a quick site that shows you the different ways (3) to do it. http://www.java2s.com/Code/SQL/Key/Defineanduseprimarykey.htm