Answers for "set auto increment in sql"

sql query to make a existing column auto increment

Alter table table_name modify column_name datatype(length) AUTO_INCREMENT PRIMARY KEY

id increment ms sql server

CREATE TABLE Persons (
    Personid int IDENTITY(1,1) PRIMARY KEY,
    LastName varchar(255) NOT NULL,
    FirstName varchar(255),
    Age int
);

how to update auto increment function in sql server

Its not changes