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');
create table sql server auto increment primary key
/* mysql server */
CREATE TABLE persons (
id int NOT NULL AUTO_INCREMENT,
colour varchar(191) NOT NULL,
created datetime,
modifed datetime
);
/* sql server IDENTITY*/
CREATE TABLE persons (
id int IDENTITY(1,1) PRIMARY KEY,
colour varchar(191) NOT NULL,
created datetime,
modifed datetime
);
INSERT INTO persons (colour, created, modified)
VALUES ('red','2022-08-05', '2022-08-05'),
VALUES ('green','2022-08-05', '2022-08-05'),
VALUES ('blue','2022-08-05', '2022-08-05');
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)
);
add primary key with auto increment sql server
/*
--Syntax for MySQL
MySQL uses the AUTO_INCREMENT keyword to perform an auto-increment feature.
By default, the starting value for AUTO_INCREMENT is 1, and it will increment by 1 for each new record.
*/
CREATE TABLE Persons (
Personid int NOT NULL AUTO_INCREMENT,
LastName varchar(255) NOT NULL,
FirstName varchar(255),
Age int,
PRIMARY KEY (Personid)
);
/* Syntax for SQL Server: */
CREATE TABLE Persons (
Personid int IDENTITY(1,1) PRIMARY KEY,
LastName varchar(255) NOT NULL,
FirstName varchar(255),
Age int
);
/* Syntax for Oracle: */
CREATE SEQUENCE seq_person
MINVALUE 1
START WITH 1
INCREMENT BY 1
CACHE 10;