alter table add primary key auto increment code example

Example 1: create table with primary key auto increment in sql

CREATE TABLE table_name (
    id INT NOT NULL IDENTITY(1, 1),
    name NVARCHAR (100) NULL,
    school NVARCHAR (100) NULL,
    PRIMARY KEY (ID)
);

Example 2: alter table auto_increment

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

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