Обсуждение: data restore

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data restore

От
Jodi Kanter
Дата:
Ok. sorry to confuse everyone...I got my restore to fun to completion so apparently my question about running restores in psql and the ordering of the data are not relevant.
I do, however, have one other question I'd like to pose.
I am getting serveral ref integrity errors which state that a FK value in one table does not exist in its parent table. However, when I go to the database to confirm this I can find no data that violates the constraint. Could the error be pointing to something less obvious?
Thanks in advance for any assistance that might come my way :-)
Jodi
--

_______________________________
Jodi L Kanter
BioInformatics Database Administrator
University of Virginia
(434) 924-2846
jkanter@virginia.edu


 

 

 

Re: data restore

От
Stephan Szabo
Дата:
On Fri, 10 Oct 2003, Jodi Kanter wrote:

> Ok. sorry to confuse everyone...I got my restore to fun to completion so
> apparently my question about running restores in psql and the ordering
> of the data are not relevant.
> I do, however, have one other question I'd like to pose.
> I am getting serveral ref integrity errors which state that a FK value
> in one table does not exist in its parent table. However, when I go to
> the database to confirm this I can find no data that violates the
> constraint. Could the error be pointing to something less obvious?

Hmm, two possibilities I can think off the top of my head are if the fk
values are being inserted and erroring and the pk rows are being done
after (which would make a later check look like this) or if there's any
inheritance involved (where a plain select will show child rows that don't
currently participate in the foreign key constraint).

Re: data restore

От
Jodi Kanter
Дата:
It appears that some of these errors are due to the parent table being populated after the child table. Can I control the order of the copy statements in my script when I run the pg_dump?

Stephan Szabo wrote:
On Fri, 10 Oct 2003, Jodi Kanter wrote:
 
Ok. sorry to confuse everyone...I got my restore to fun to completion so
apparently my question about running restores in psql and the ordering
of the data are not relevant.
I do, however, have one other question I'd like to pose.
I am getting serveral ref integrity errors which state that a FK value
in one table does not exist in its parent table. However, when I go to
the database to confirm this I can find no data that violates the
constraint. Could the error be pointing to something less obvious?   
Hmm, two possibilities I can think off the top of my head are if the fk
values are being inserted and erroring and the pk rows are being done
after (which would make a later check look like this) or if there's any
inheritance involved (where a plain select will show child rows that don't
currently participate in the foreign key constraint). 

--

_______________________________
Jodi L Kanter
BioInformatics Database Administrator
University of Virginia
(434) 924-2846
jkanter@virginia.edu


 

 

 

Re: data restore

От
Stephan Szabo
Дата:
On Fri, 10 Oct 2003, Jodi Kanter wrote:

> It appears that some of these errors are due to the parent table being
> populated after the child table. Can I control the order of the copy
> statements in my script when I run the pg_dump?

I think if you use one of the custom formats and pg_restore you can alter
the restore order, but I've never done that, so I don't know the details.