Re: foreign key problem with pg_dump under 7.3b2

On Tue, 2002-10-15 at 15:38, Stephan Szabo wrote:
> 
> On 15 Oct 2002, John Halderman wrote:
> 
> > On Tue, 2002-10-15 at 15:12, Stephan Szabo wrote:
> > > On 15 Oct 2002, John Halderman wrote:
> > >
> > > > I'm currently using 7.3b2 for test and development. I ran into a problem
> > > > using a dumped schema from pg_dump. After importing the dumped schema,
> > > > any delete or update involving a foreign key results in a relation 0
> > > > does not exist error. I noticed that all my foreign key declarations
> > > > were moved from the table create to separate statements at the bottom of
> > > > the dump file. Thanks in advance for any insight into this problem you
> > > > can lend.
> > >
> > > If the data has moved from earlier versions (I think 7.0.x) there was a
> > > bug in an older pg_dump that dropped a piece of information (the
> > > related table) and the loss would be carried along.  That
> > > information is now used rather than the name passed in the args
> > > so said dumps break on b2. Current sources should fill in the missing
> > > information whenever possible.
> > >
> > >
> > Actually we are dumping from b2 to b2. Also the problem doesn't seem to be
> > related to the data or missing data. I can infer this because I am doing
> > a schema only dump. After I import this dump i create some test data and
> > still run into the relation 0 does not exist error. I think it has
> > something to do with the way the dump defines the foreign key
> > constraints and triggers. Thanks again for the help.
> 
> Was your old b2 system loaded from a dump?  If so, you'd be in the upgrade
> portion of the problem. Old dumps were incorrect, and as soon as you
> loaded from one of those dumps all future dumps became incorrect in the
> same way.  Current sources notice that the item is missing and attempts
> to figure out what it should be.
> 
> 
Interesting, that may be it. I'll do some testing to verify your theory.
Thank you for your help.

-john.