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p.shaw3@ukonline.co.uk
Posting Yak Master
103 Posts |
 Posted - 2007-07-13 : 12:32:35
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| Is there any way, under any circumstance, that a primary key can contain one NULL? |
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karuna
Aged Yak Warrior
582 Posts |
Posted - 2007-07-13 : 12:33:41
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| No, A primary key cannot have NULL, but an unique key can have 1 NULL.ThanksKarunakaran |
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p.shaw3@ukonline.co.uk
Posting Yak Master
103 Posts |
Posted - 2007-07-13 : 12:34:23
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| Thanks. |
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X002548
Not Just a Number
15586 Posts |
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p.shaw3@ukonline.co.uk
Posting Yak Master
103 Posts |
Posted - 2007-07-14 : 07:55:42
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| Thanks Brett. That's a very interesting article. |
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Primary Key contain a NULL??