Re: Patch for BUG #2073: Can't drop sequence when created

Patch applied. Thanks.

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Dhanaraj M wrote:
> Hi
>
> I send the appropriate patch for bug #2073. This fix disallows to change the default sequence.
> I ran the regression test and passed. The bug details are given below.
> I am awaiting to answer for any further clarifications.
>
> ===================================================================
> > Bug reference: 2073
> > Logged by: Aaron Dummer
> > Email address: aaron ( at ) dummer ( dot ) info
> > PostgreSQL version: 8.0.3
> > Operating system: Debian Linux
> > Description: Can't drop sequence when created via SERIAL column
> > Details:
> >
> > If I create a table named foo with a column named bar, column type SERIAL,
> > it auto-generates a sequence named foo_bar_seq. Now if I manually create a
> > new sequence called custom_seq, and change the default value of foo.bar to
> > reference the new sequence, I still can't delete the old sequence
> > (foo_bar_seq).
> >
> > In other words, from a user's point of view, the foo table is no longer
> > dependent on the foo_bar_seq, yet the system still sees it as dependent.
> >
> > I brought this topic up on the #postgresql IRC channel and the behavior was
> > confirmed by AndrewSN, scampbell_, and mastermind.
>
> Right. We have this TODO item:
>
> * %Disallow changing default expression of a SERIAL column?
>
> which would prevent you from changing the default expression for a
> SERIAL column. So the answer is, don't do that, and in the future, we
> might prevent it.
>
> --
> Bruce Momjian
>
> ==================================================================
>

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