Allow Nulls - Put a checkmakr in that field?

I have a MS SQL Server Management Studio.

I have a field name and I would like to change to allow nulls. how i'm able to put a checkmark into that fields allow nulls?

Column name    Data type       Allow nulls.
name                  char(10)           [     ]

Thank yous.
LVL 4
koilaAsked:
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koilaAuthor Commented:
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unknown_routineCommented:
This is because  "Prevent saving changes that require the table re-creation option" in the Designer section of the SQL Server Management Studio (SSMS) Options window is selected.
either enable that option or use SQL to allow null for the column:

 for example

alter table MyTable alter column MyDate7 datetime NULL
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koilaAuthor Commented:
tx
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Scott PletcherSenior DBACommented:
It's extremely inefficient, and dangerous, to use the GUI to make those types of table changes.  SQL writes a script that copies the table out, mods the table, and copies it back in.

Instead, use the ALTER TABLE command, as shown above.
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Microsoft SQL Server 2008

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