Обсуждение: \dt is listing tables from all databases

Greetings,
I've got a postgresql server running 8.1.10 on Linux.  I've noticed
that when i'm logged into one of the databases, and I run '\dt' its
listing every table from every database on the server (rather than
just the tables in the current database instance).  To make matters
even more strange, if I log into any of the other databases and run
'\dt' it only lists the tables in that database (as expected).  I'm
connecting as the same user every time.

Any ideas why this is happening?

thanks

Lonni J Friedman <netllama@gmail.com> writes:
> I've got a postgresql server running 8.1.10 on Linux.  I've noticed
> that when i'm logged into one of the databases, and I run '\dt' its
> listing every table from every database on the server (rather than
> just the tables in the current database instance).  To make matters
> even more strange, if I log into any of the other databases and run
> '\dt' it only lists the tables in that database (as expected).  I'm
> connecting as the same user every time.

It's physically impossible for \dt to behave that way --- it simply
doesn't have access to the catalogs for other databases.

I'm going to read between the lines and guess about what really
happened, though.  By default, CREATE DATABASE clones what is in the
"template1" database.  If you thoughtlessly create some tables in that
database, they'll get copied into other databases created subsequently.
Lather, rinse, repeat enough times, and it might look like the
later-created databases contain copies of everything else.

Another possibility is you pointed a pg_restore operation at the wrong
database and it loaded up copies of tables you meant to put somewhere
else.

            regards, tom lane

On Thu, Jan 14, 2010 at 12:58 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Lonni J Friedman <netllama@gmail.com> writes:
>> I've got a postgresql server running 8.1.10 on Linux.  I've noticed
>> that when i'm logged into one of the databases, and I run '\dt' its
>> listing every table from every database on the server (rather than
>> just the tables in the current database instance).  To make matters
>> even more strange, if I log into any of the other databases and run
>> '\dt' it only lists the tables in that database (as expected).  I'm
>> connecting as the same user every time.
>
> It's physically impossible for \dt to behave that way --- it simply
> doesn't have access to the catalogs for other databases.
>
> I'm going to read between the lines and guess about what really
> happened, though.  By default, CREATE DATABASE clones what is in the
> "template1" database.  If you thoughtlessly create some tables in that
> database, they'll get copied into other databases created subsequently.
> Lather, rinse, repeat enough times, and it might look like the
> later-created databases contain copies of everything else.
>
> Another possibility is you pointed a pg_restore operation at the wrong
> database and it loaded up copies of tables you meant to put somewhere
> else.

Thanks Tom.

Actually, it turns out its the last one.  After asking around, someone
did erroneously try to restore the wrong database.