NOT NULL constraint can be added using MODIFY clause of ALTER TABLE statement
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Keep practicing — related questions
- Using ALTER TABLE command one can only ADD or DROP a constraint, but NOT MODIFY it's structure.
- NULL values violate CHECK constraint
- The columns with unique constraint allows more than one null values to be inserted.
- Can you add not null column to a table already containing data ?
- Constraints can be specified after a table is created
- Which of the following can NOT be done using the ALTER TABLE statement
- A constraint is applied to a row and not a column
- Which of the following is correct about NOT NULL constraint? A. NOT NULL constraint demands a column not to...