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With Values Using Alter Table

Step-1: Create Table

CREATE TABLE STUDENT
(
ID INT IDENTITY(1,1) PRIMARY KEY,
STUDENTNAME VARCHAR(100) NOT NULL ,
LIVINGLOCATION VARCHAR(100) NULL
)

Step-2: Insert Some Sample Data

INSERT INTO STUDENT(STUDENTNAME,LIVINGLOCATION)
SELECT 'Rakesh','Hyderabad'
UNION ALL
SELECT 'Raju','Delhi'
UNION ALL
SELECT 'Madhu','Hyderabad'
UNION ALL
SELECT 'Naresh',NULL
UNION ALL
SELECT 'Venaktesh','Chennai'

Step-3:
If we need to add DOJ column to Student table with default constraint , But all the Existing rows want to update Default GETDATE() , if WITH VALUES are not used all existing rows DOJ column should be NULL.

ALTER TABLE STUDENT ADD DOJ DATETIME NULL DEFAULT GETDATE() WITH VALUES


Step-4:

SELECT * FROM STUDENT










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