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Inserting UniqueIdentifier results in null value

Posted on 2009-05-05
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Last Modified: 2012-05-06
So I have this table with a bunch of nullable fields. Amoung them is a uniqueIdentifier column(FK_ID)  that is also nullable. I also have an ID field(TableA_ID) which gets set by NewID() as the default value. I do an insert like so....

INSERT INTO [TableA](FK_ID)
SELECT NewID()
(1 row(s) affected)

I see the following result in TableA
FK_ID____________________________TableA_ID____________________________
Null                                                                      9326DC68-2303-4A12-B2CB-6458E215DFD4

Why can't I insert a uniqueidentifier?
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Question by:rlstewart
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6 Comments
 
LVL 60

Expert Comment

by:chapmandew
ID: 24309076
so, fk_id doesn't have a value in it?  
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Author Comment

by:rlstewart
ID: 24309103
A new row is added with the value null in the FK_ID field.
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LVL 60

Expert Comment

by:chapmandew
ID: 24309112
are you sure the field tablea_id has a default value of newid()??
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Expert Comment

by:Kevin Cross
ID: 24309126
Is there a constraint on FK_ID that it must be NULL or a valid value from another table?
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LVL 26

Expert Comment

by:tigin44
ID: 24309129
is the table trying to insert value a detail table? if so then you should insert the value for the master table. and then insert into the detail table.
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Accepted Solution

by:
rlstewart earned 0 total points
ID: 24309216
Found the problem, there was a INSTEAD OF INSERT trigger that had left off the FK_ID column, hence the null value. DOH!!!!
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