Explain the ALTER table statement in SQL Server.

The ALTER table statement is used to add, delete or modify the columns in a table.

Ex :
To ADD a column in a table,

ALTER TABLE Employees

ADD DateofBirth date

This Query will display a new column “DateofBirth” in date format to Employees table.

To DELETE a column in a table,

ALTER TABLE Employees

DROP column DateofBirth

This Query will delete the column “DateofBirth” from Employees table.