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Editorial Team
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Asked: 2026-06-02T15:39:31+00:00

In SQL Server Management Studio when creating a New Table or adding columns to

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In SQL Server Management Studio when creating a New Table or adding columns to an existing table through the Table Designer, there are 3 columns presented:

  1. Column Name
  2. Data Type
  3. Allow Nulls

Allow Nulls always defaults to True (ticked), however, I am wondering if it is possible to configure SSMS to always default this to False (unticked)?

To a lesser extent I am also interested to know if it is possible to configure the editable default options within the Column Properties tab in the lower pane.

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  1. Editorial Team

    If you are fine with manipulating the registry key, here is an option to force the SSMS to always assign the value false to Allow Null property.

    NOTE: Please be careful while altering registry keys.

    1. Type regedit in the Windows Start –> Run command to open the Registry Editor.

    2. Navigate to HKEY_CURRENT_USER\Software\Microsoft\Microsoft SQL Server\100\Tools\Shell\DataProject You might need to change the SQL Server version accordingly. I am using SQL Server 2008 R2 Express and hence the version 100.

    3. Under the above mentioned registry path, look for the key name SSVDefaultAllowNull.

    4. Right-click on the key and select Modify option. Change the value from 1 to 0. Default value is 1, which represents True.

    5. If you are already running SQL Server Management Studio, restart it. Thanks to @Andriy M for pointing out this step.

    Hope that helps.

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