Обсуждение: Name -> number ...
77 databases in data/base directory ... all number'd ...
select * from pg_database;
doesn't give me the reference to which directory is which database ... so
what table do we need to join on to get this information?
thanks ...
Marc G. Fournier ICQ#7615664 IRC Nick: Scrappy
Systems Administrator @ hub.org
primary: scrappy@hub.org secondary: scrappy@{freebsd|postgresql}.org
> > d'oh, should have extended my query ... > > select oid,* from pg_database; > > gives the directory name ... > Interesting to not that reffilenode is for tables, but oid is for databases. I hadn't realized that distinction until you asked. You can't rename databases, so the oid is OK for this. -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 853-3000+ If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania19026
> > 77 databases in data/base directory ... all number'd ... > > select * from pg_database; > > doesn't give me the reference to which directory is which database ... so > what table do we need to join on to get this information? > > thanks ... Info is in pg_class.relfilenode. Now the big question is where do database names go. My guess is pg_database.oid. -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 853-3000+ If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania19026
d'oh, should have extended my query ... select oid,* from pg_database; gives the directory name ... thanks :) On Sat, 14 Apr 2001, Bruce Momjian wrote: > > > > 77 databases in data/base directory ... all number'd ... > > > > select * from pg_database; > > > > doesn't give me the reference to which directory is which database ... so > > what table do we need to join on to get this information? > > > > thanks ... > > Info is in pg_class.relfilenode. Now the big question is where do > database names go. My guess is pg_database.oid. > > -- > Bruce Momjian | http://candle.pha.pa.us > pgman@candle.pha.pa.us | (610) 853-3000 > + If your life is a hard drive, | 830 Blythe Avenue > + Christ can be your backup. | Drexel Hill, Pennsylvania 19026 > Marc G. Fournier ICQ#7615664 IRC Nick: Scrappy Systems Administrator @ hub.org primary: scrappy@hub.org secondary: scrappy@{freebsd|postgresql}.org
The Hermit Hacker <scrappy@hub.org> writes:
> 77 databases in data/base directory ... all number'd ...
> select * from pg_database;
> doesn't give me the reference to which directory is which database ... so
> what table do we need to join on to get this information?
select oid, datname from pg_database;
I think Bruce did a contrib utility to keep track of this, too.
regards, tom lane