How to modify the default value of a field in SQL Server?

To change the default value of a field in SQL Server, you can use the ALTER TABLE statement and specify the new default value. For example, if you want to change the default value of a field from its current value to a new value, you can do the following:

ALTER TABLE your_table_name
ALTER COLUMN your_column_name SET DEFAULT your_new_default_value;

Please note to ensure that the new default value is compatible with the data type of the field.