Unique and nulls ?
Bart Pietercil
bart.pietercil at gmail.com
Thu Oct 4 03:43:31 CDT 2007
Hi List,
is it possible to combine for a given field the nullable and unique
properties in such a way that the null values are excluded from the
unique test ?
Case: field mailaddress
This field should be unique but I do not always have a mailaddress so
it needs to accept null values. These null values should be excluded
from the unique test.
TIA
Bart Pietercil
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