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

0 vote389 views1 answer
Get total and distict row diff in sql
SQL
0 vote337 views1 answer
Não é possível executar uma operação DML dentro de uma consulta
SQL
11 votes390 views3 answers
Python sqlite3 create table if not exists
SQL
1 vote363 views1 answer
Mysql show database size in mb
SQL
9 votes330 views1 answer
Identity insert on sql server
SQL
0 vote393 views1 answer
Sql constarint
SQL
5 votes333 views2 answers
Oracle tables with column name
SQL
0 vote368 views1 answer
Creating h2 database in relative directory eclopse
SQL
1 vote358 views1 answer
Error code 1292 mysql workbench
SQL
0 vote347 views1 answer
Odd record sql query
SQL