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Re: Changing from NOT NULL to NULL

From: Rob Mosher <mosher(at)andrews(dot)edu>
To: pgsql-novice(at)postgresql(dot)org
Subject: Re: Changing from NOT NULL to NULL
Date: 2004-02-16 16:03:05
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Lists: pgsql-novice
I will try this out as soon as I can. Thanks to all who replied.

Rob Mosher

Tom Lane wrote:

>Rob Mosher <mosher(at)andrews(dot)edu> writes:
>>Is there anyway I can change a field to allowing nulls without dumping 
>>the table, dropping it, recreating it as desired, and filling all the 
>>data back in?
>ALTER TABLE ... DROP NOT NULL does the trick in recent releases.  Before
>that, you could resort to manually poking the attnotnull flag in
>the pg_attribute row for the field.
>			regards, tom lane

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