Hello,

I want to do something like this:

UPDATE news SET sequence = sequence-1 WHERE sequence > 5

With the database-api I tried the following:

News.objects.filter(sequence__gt =  msequence).update(sequence =
sequence-1)

But thats not possible, beacause the assignment parameter sequence-1
must be a variable and not a reference to a column-value.

Is there any possibility to solve this problem without iterating over
all results with News.objects.filter(sequence__gt =  msequence) and
setting the new sequence manually in each iteration?

Thanks,
Toni
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