Databases handle primary keys differently:
Mysql lets you declare a column to be 'autoincrementing'
CREATE TABLE customer ( id INTEGER NOT NULL AUTO_INCREMENT PRIMARY KEY, name VARCHAR(32) NOT NULL, address VARCHAR(64) NOT NULL, email VARCHAR(64) );
With Postgres you typically declare a sequence and use that.
CREATE TABLE customer ( id INTEGER NOT NULL PRIMARY KEY, name VARCHAR(32) NOT NULL, address VARCHAR(64) NOT NULL, email VARCHAR(64) );
CREATE SEQUENCE customer_id_seq start 1;