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Can a unique index have more than one null value? If not,
what error code is given if an attempt is made to insert
more than one null value?
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Answer Posted / mani
Unique index can have null values and no null value is equal
to another null value.
i don't know if it raises an error or not when you insert a
null value.
Null value acceptance in the column is again based on the
definition given for the column whether it can accept null
values or not.
| Is This Answer Correct ? | 5 Yes | 2 No |
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