What Are The Pre-requisites To Modify Datatype Of A Column And To Add A Column With NOT NULL Constraint

What Are The Pre-requisites To Modify Datatype Of A Column And To Add A Column With NOT NULL Constraint


  • 28 Dec, 2011

    - To modify the datatype of a column the column must be empty.- To add a column with NOT NULL constrain, the table must be empty.

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