Re: Adding UNIQUE constraint on NULL column

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Or look at:

http://archives.postgresql.org/pgsql-sql/2003-08/msg00286.php

(and possibly its follow-up)

On Jan 13, 2005, at 3:16 PM, Scott Marlowe wrote:

> On Thu, 2005-01-13 at 11:02, Doug McNaught wrote:
>> Dave Smith <dave(dot)smith(at)candata(dot)com> writes:
>>
>>> On Thu, 2005-01-13 at 10:12, Doug McNaught wrote:
>>
>>>> Are you really saying that you want 'NULL = NULL' to return 't'?
>>
>>> Yes
>>
>> Well, that's not how NULL works.
>
> In this instance, just create an artificial NULL, like a text string of
> "NONE" and insert that.
>
>
>
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- -----------------------------------------------------------
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