how to add a column to an existing table in sql

Add a column in an already existing table in SQL

To add a column in an already existing table, you will need to alter the existing schema of that table. To achieve that we will have to use ALTER statement.

Consider a table named 'Test' which is as below:

Suppose we need to add another column called 'Ids' which is an identity column and give a unique number to each column, you can easily achieve this using the below query

alter table dbo.Input

add ids bigint identity(1,1)