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Alter Table and Column to Allow Nulls


Alter Table and Column to Allow Nulls

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SB1
SB1
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What is the software command to modify the constraints on a foreign key to allow nulls and then restore the constraints?



Antares686
Antares686
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I believe it is simply

ALTER TABLE tblName ALTER COLUMN colName NULL

on the table with the foreign key reference. Or are you wanting to enable allow nulls for the duration then put back as I don't believe you can if you column is null when done unless you are going to fix the data befor turning not null back on.

"Don't roll your eyes at me. I will tape them in place." (Teacher on Boston Public)



SB1
SB1
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The second part of your response answered my question (just as I thought).

Thank you for your prompt response.



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