Discussion on question by user87166: Why does a UNIQUE constraint allow only one NULL?
Discussion on question by user87166: Why does a UNIQUE constraint allow only one NULL?

Imported from a comment discussion on https://dba.stackexchange.com/questions/80514/why-does-a-unique-constraint-allow-only-one-null
first message | 2017-08-29 |
last message | 2872 days ago |
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