Re: deferring/disabling unique index

Joshua D. Drake wrote:
>
> >So, does it mean that the only way to disable the index is to drop and
> >recreate it? What about setting indisunique to false temporarily?
> >
> >
> >
> I am just curious... why would you want to defer a unique constraint?

I remember now --- if you do:

UPDATE tab SET col = col + 1;

you hit a unique constraint when you shouldn't need to. I think the
workaround was:

UPDATE tab SET col = -col + -1;

then:

UPDATE tab SET col = -col;

This assumes all the values are positive, of course.

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