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how i can avoid this problem:
Cannot insert the value NULL into column 'rowguid', column does not allow nulls. INSERT fails.

sample querry:
insert into tablename (col1,col2,col3)  values('v1','v2','v3')
Updated 26-Jun-13 18:32pm
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Solution 1

Check your database schema - rowguid expects a value (as 'allow nulls' is most probably false).
As a result, you get this error.

Since a guid is a unique identifier, you might need to pass a value that is appropriate. I recommend you check your entire code flow to ensure you send in the correct value.
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Solution 2

Check you Table design and set allow null........
CDP1802 27-Jun-13 0:58am
That's the lazy way out and can lead to more problems than the one it solves. The error may be gone, but what if this value is required and the program's logic does not expect null values and falls on its nose at many places because of that?

The only way to deal with this is to understand your data model. Only then you can make a decision about allowing nulls or not. If not, then the only solution would be to assure that a valid value is provided for this column when rows are inserted.
Nirav Prabtani 27-Jun-13 1:18am
Nirav Prabtani 27-Jun-13 1:19am
I will take care about that...:)
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Solution 3

You can't insert null values if your 'rowguid' column is marked as Primary key.

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