An empty column declared _________ stores.
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Keep practicing — related questions
- is_null(is_valid(NULL))
- A null is the same as zero or a blank space.
- A null is the same as zero or a blank space.
- A null is the same as zero or a blank space.
- A null is the same as zero or a blank space.
- Absence of value is NULL
- A NULL value is treated as a blank or 0.
- The columns with unique constraint allows more than one null values to be inserted.