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CONSTRAINT UNIQUE DUPLICATE, IT IS POSSIBLED?

651371Jul 25 2008 — edited Jul 28 2008

Hi,

Who knows say whether it is possible to create a unique key in a field where there are duplicate records,
I want the key only validate the new records?

Thank you

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Locked on Aug 25 2008

Added on Jul 25 2008

#general-database-discussions

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