How to Alter column with a Default constraint

[admin]

1- Drop the constraint first.
2- Alter the column.
3- recreate the constraint again.

Code: [Select]

ALTER TABLE dbo.TPURENTRY
DROP CONSTRAINT TPURENTRY_ADDITIONNALINFO_DF
GO

ALTER TABLE dbo.TPURENTRY
ALTER COLUMN ADDITIONNALINFO VARCHAR(MAX) NULL
GO

ALTER TABLE dbo.TPURENTRY 
ADD CONSTRAINT TPURENTRY_ADDITIONNALINFO_DF DEFAULT '' FOR ADDITIONNALINFO
GO