Re: Data problem - error "invalid attribute number # for "

Sebastien Boisvert <sebastienboisvert@yahoo.com> writes:
> We've received a client's database which was giving errors and refusing to be backed up; at this point we do not know
what'shappened to the database to corrupt it (likely a hardware or power failure, etc.) 
> The error that is being given when trying to do selects on the affected table or doing a pg_dump is:

> ERROR:  invalid attribute number 32533 for largedata

Some poking through the source code finds only one match for that error
message, which is in relcache.c.  It looks like you have a row in
pg_attribute that claims to belong to that relation, but has attnum
32533.  It would be interesting to see the results for
    select * from pg_attribute where attrelid = 'largedata'::regclass

What PG version is this exactly, on what platform?

            regards, tom lane