You can change or remove column defaults using the same form of the ALTER TABLE statement you used to create the defaults. The following statement changes the default value of a column named OrderDate from its current setting to CURRENT DATE:
ALTER TABLE SalesOrders ALTER OrderDate DEFAULT CURRENT DATE; |
You can remove column defaults by modifying them to be NULL. The following statement removes the default from the OrderDate column:
ALTER TABLE SalesOrders ALTER OrderDate DEFAULT NULL; |
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