Answers for "how to autoincrement id alter table"

create a table with an id in mysql

CREATE TABLE DemoT (
    Personid int NOT NULL AUTO_INCREMENT,
    LastName varchar(111) NOT NULL,
    FirstName varchar(111),
    Age int,
    PRIMARY KEY (Personid)
);

how to change the auto increment in existing table mysql

ALTER TABLE tbl_access ADD COLUMN `access_id` int(10) NOT NULL PRIMARY KEY AUTO_INCREMENT FIRST