sql query to make a existing column auto increment
Alter table table_name modify column_name datatype(length) AUTO_INCREMENT PRIMARY KEYsql query to make a existing column auto increment
Alter table table_name modify column_name datatype(length) AUTO_INCREMENT PRIMARY KEYhow 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');what is auto increment in sql
Autoincrement keyword allows the
user to create a unique number to get
generated whenever a new record is
inserted into the table.
This keyword is usually required
whenever PRIMARY KEY in SQL is used.how to alter auto increment in sql
INSERT INTO Persons (Personid,FirstName,LastName)
VALUES (seq_person.nextval,'Lars','Monsen');Copyright © 2021 Codeinu
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