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Oracle: What are the pre-requisites to (i) modify data type of a column (ii) add a column with NOT NULL constraint?

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Oracle: What are the pre-requisites to (i) modify data type of a column (ii) add a column with NOT NULL constraint?
posted Aug 31, 2015 by Suchithra

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1 Answer

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Best answer

To Modify the data type of a column the column must be empty.
To add a column with NOT NULL constrain, the table must be empty

answer Sep 1, 2015 by Arun Gowda
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