MySQL ALTER TABLE AUTO_INCREMENT 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: alter table auto_increment

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

Example 4: auto increment column in mysql query results

SET @auto_increment=0;
SELECT @auto_increment := @auto_increment+1 AS `No`;

Example 5: 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