What is the purpose of the “alter” command in SQL Serve…

In SQL Server, the ALTER statement is used to modify the structure or properties of database objects, including tables, views, stored procedures, functions, and more. It can be used to perform the following operations:

1. Modify the structure of a table: you can add, modify or delete columns in a table, change the data type, length, constraints, etc.
2. You can modify the properties of a table, such as its storage engine, partitioning method, indexes, triggers, constraints, and so on.
3. Change the definition of the view: you can modify the view’s query statement, column names, aliases, etc.
4. Changes can be made to the definition of a stored procedure or function, including modifying the code, parameters, return values, etc.
5. Alter the permissions of database objects: This involves modifying the authorization information for database objects, such as granting or revoking access to a table, view, stored procedure, or function.

In conclusion, the ALTER statement in SQL Server is used to modify and manage database objects to adapt to changes in business requirements.