set auto_increment mysql code example

Example 1: mysql alter column auto increment

ALTER TABLE document MODIFY COLUMN document_id INT auto_increment

Example 2: mysql set id auto increment

ALTER TABLE users AUTO_INCREMENT=1001;

Example 3: 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)
);

Example 4: auto_increment mysql

ALTER TABLE User AUTO_INCREMENT = 1;

Example 5: alter table auto_increment

ALTER TABLE ALLITEMS CHANGE itemid itemid INT(10)AUTO_INCREMENT PRIMARY KEY;