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Understanding NULL Expand / Collapse
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Posted Wednesday, November 19, 2008 12:44 AM
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Great one. I got confused whether there is something wrong. It was a clever question. But with Set Ansi_Nulls off we are getting different result.


Post #604928
Posted Wednesday, November 19, 2008 10:34 AM


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Thanks to Tao Klerks and Archie Flockhart for a very edifying discussion of nulls. I've saved your comments into my sql server reference folder.


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Post #605282
Posted Wednesday, November 19, 2008 2:40 PM


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with ansi nulls on: NULL is like a black hole that converts anything it comes into contact with to NULL as well. Kind of like a vampire, NULL bites other values on the neck then what do you know, there vampries (NULL) to.

This is of course if you do not use ISNULL/IS NULL which is like garlic for NULL.

Carlton..
Post #605420
Posted Wednesday, January 16, 2013 2:32 AM


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nice question and excellent explanation from you guys


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To get quick answer follow this link:
http://www.sqlservercentral.com/articles/Best+Practices/61537/
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