Let’s create the same Students table in the SQL Server and use the IDENTITY keyword to set auto increment. increment_value: It is the increment between each auto-generated number.initial_value: It is the value from where you want the numbering to begin.IDENTITY (initial_value, increment_value) The SQL Server uses the IDENTITY keyword to set auto increment with the following syntax while creating a table: INSERT INTO Students (FirstName, LastName, Age) VALUES ('Hitesh', 'Patel', 29) Īuto Increment in SQL: Setup for SQL Server INSERT INTO Students (FirstName, LastName, Age) VALUES ('David', 'Tiwari', 26) Use the syntax to start the numbering from 100 in the Students table and then add more rows to see it in action.ĪLTER TABLE Students AUTO_INCREMENT = 100 start_value: It is the value from where you want to begin the numbering.You can also make an auto increment in SQL to start from another value with the following syntax:ĪLTER TABLE table_name AUTO_INCREMENT = start_value INSERT INTO Students (FirstName, LastName, Age) VALUES ('Nick', 'Chopra', 23) Īs you can see in the output, auto increment in SQL provided the ID column with unique numbers as expected. INSERT INTO Students (FirstName, LastName, Age) VALUES ('Aakash', 'Roy', 25) INSERT INTO Students (FirstName, LastName, Age) VALUES ('Rahul', 'Kumar', 24) After making the table, you will use the INSERT INTO command to add rows without providing the ID column’s value. In the example below, you will use the CREATE TABLE command to create a Students table and apply PRIMARY KEY and AUTO_INCREMENT to the ID column. By default, it starts with the number one and increases the value by one for each new record. In the MySQL server, it applies an auto increment field with the keyword AUTO_INCREMENT. You will have to create a Students table in all the DBMS and set auto increment in SQL. You will be going through some primary DBMS systems and look at how to set up an auto increment column. Several databases support SQL auto increment fields. Now, since you know what the SQL auto increment field does, let’s set it up to automatically generate unique numbers for the records you enter in the database table.
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