Thank you all for your help. 
For now i just removed the "ALLOW NULL" on the fields and placed default values.

I have another question but ill post this in a new "thread" because it's not 
related.


. . . . . . . . . . . . . . . . . . . . . . . . . .
Patrick Szabo
 XSLT Developer 
LexisNexis
Marxergasse 25, 1030 Wien

mailto:patrick.sz...@lexisnexis.at
Tel.: 00431 534521573 
Fax: +43 (1) 534 52 - 146 


-----Ursprüngliche Nachricht-----

Von: django-users@googlegroups.com [mailto:django-users@googlegroups.com] Im 
Auftrag von Tom Evans
Gesendet: Montag, 04. Juli 2011 11:53
An: django-users@googlegroups.com
Betreff: Re: unique_together doesn't work

On Mon, Jul 4, 2011 at 10:43 AM, Szabo, Patrick (LNG-VIE)
<patrick.sz...@lexisnexis.at> wrote:
> Hi,
>
> Sry, i was a little bit unclear.
> Of course i tried to store identical entries (all fields have the same 
> values) and i had no problem doing so.  Since most of the files i want to 
> check for can be null i only inputet a titel.
>
>

It might have been nice for you to give this example straight up
(although you haven't actually specified the case clearly, I'm still
just guessing).

So you are creating objects, and 3 of the fields that you have said
are unique_together are undefined, and have Null=True in their field
definition? In databases, NULL is not equal to anything, even NULL.
Eg, NULL == NULL is false.

Therefore, 2 rows in the database with the same title, but with NULL
for the other 3 fields in the unique index, would not be considered as
the same row.

Tom

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