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Violating Foreign Keys


Violating Foreign Keys

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chrisfradenburg
chrisfradenburg
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Comments posted to this topic are about the item Violating Foreign Keys
bitbucket-25253
bitbucket-25253
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A lot of reading of the T-SQL but a GOOD question ...

If everything seems to be going well, you have obviously overlooked something.

Ron

Please help us, help you -before posting a question please read

Before posting a performance problem please read
Carlo Romagnano
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Easy and too long question.

I run on tuttopodismo
Stewart "Arturius" Campbell
Stewart "Arturius" Campbell
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A good question about the understanding of referential integrity.
Thanks

____________________________________________
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Tom Thomson
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Nice easy question.

Maybe a bit too long in the sql.

Tom

Andre Guerreiro
Andre Guerreiro
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As Paul White would say, this is one of those questions that turns us into a T-SQL parser. :-D

But nice question.
Almost got it wrong because I couldn't see the error in query #7 (there were 5 values being passed to 4 columns).

Thank you.

Best regards,

Best regards,

Andre Guerreiro Neto

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Thomas Abraham
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codebyo (10/25/2011)
Almost got it wrong because I couldn't see the error in query #7 (there were 5 values being passed to 4 columns).


#7 fails because personname is declared NOT NULL in the table def, I believe.

Nice question. Didn't realize that FK constraints aren't checked if a NULL is present, as I don't recall having declared a FK on columns where I allowed nulls.

Please don't go. The drones need you. They look up to you.
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bitbucket-25253
bitbucket-25253
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Rather surprised that as of this posting only 44 percent of those answering had answered correctly.

If everything seems to be going well, you have obviously overlooked something.

Ron

Please help us, help you -before posting a question please read

Before posting a performance problem please read
jeff.mason
jeff.mason
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bitbucket-25253 (10/25/2011)
Rather surprised that as of this posting only 44 percent of those answering had answered correctly.


I at least missed it because, in the midst of all of the boxes, I checked the wrong one by mistake.
SQLRNNR
SQLRNNR
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Thanks for the question.



Jason AKA CirqueDeSQLeil
I have given a name to my pain...
MCM SQL Server, MVP


SQL RNNR

Posting Performance Based Questions - Gail Shaw

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