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Can a primary key have null values? If we try to insert a
null value in a primary key column, will it work or give an
error code?
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Answer Posted / satya prasad n
The PRIMARY KEY cannot be null. you can insert ZERO into
that but should not be null. It will throw an error if you
try to inserts a NULL.
| Is This Answer Correct ? | 8 Yes | 4 No |
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