How to auto increment in sql

CREATE TABLE Persons (
    Personid int NOT NULL AUTO_INCREMENT,
    LastName varchar(255) NOT NULL,
    FirstName varchar(255),
    Age int,
    PRIMARY KEY (Personid)
);
INSERT INTO Persons (FirstName,LastName)
VALUES ('Lars','Monsen');

Sql query to make a existing column auto increment

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

Source: stackoverflow.com

Similar codes

3 votes145 views3 answers
Raw select laravel
SQL
0 vote110 views1 answer
Sql injection mitigation
SQL
-1 vote148 views1 answer
Default username and password for oracle 11g
SQL
45 votes217 views5 answers
Grant all privileges mysql
SQL
0 vote154 views1 answer
Tablas bootstrap responsive sql server para datos vivos
SQL
0 vote155 views1 answer
Google sheets data validation custom formula filter
SQL
6 votes126 views4 answers
Eloquent to sql with bindings
SQL
0 vote131 views1 answer
Automate mysql cli query
SQL
0 vote175 views1 answer
Mengatasi error mysqldump: [ERROR] unknown option '--no-beep'
SQL
3 votes138 views1 answer
Create a table with an id in mysql
SQL