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Logically, a Null repersents an UNKNOWN value. Therfore it's value is unique
in the sense that it is unknown.
B.
Prasad wrote in message <37074AB8.23FD_at_inspire.net.nz>...
>Hai!
>I want to know how oracle reads the null values
>on a column defined with unique constraint . Plese clarify whether
>null is treated as same or different on each row.
>
>I will be very much thankful for an early reply
>kep
Received on Sun Apr 04 1999 - 16:59:57 CDT