Обсуждение: Intentionally splitting data in a table across files.
Does PostgreSQL support (or some day will support) "partitioned tables"?
This is a feature currently available in oracle which allows you to
physically separate the data for a table based on values in a set of columns
and attach or remove the files from the table.
While searching for the answer in the existing Docs & Archives, I noted that
a table will be split across files automatically to deal with situations
where the required space exceeds operating system limits, so it appears that
at least part of the concept already exists, but I found nothing about a way
to organize the data into a particular file or take a file that hold part of
a table off-line without making a mess. This would be a great enhancement
for warehousing applications such as ours, where the ability take a
particular large chunk of data on & off line quickly is important.
Alternately, does anyone have an idea about how to address this need in a
different way using existing tools?
-Nick
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Nick Fankhauser
nickf@doxpop.com Phone 1.765.965.7363 Fax 1.765.962.9788
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"Nick Fankhauser" <nickf@ontko.com> writes:
> Does PostgreSQL support (or some day will support) "partitioned tables"?
It's not on anyone's radar screen AFAIK.
> Alternately, does anyone have an idea about how to address this need in a
> different way using existing tools?
Make a view that's a UNION of the component tables, plus rules that
cause inserts to go into the appropriate components.
regards, tom lane
> "Nick Fankhauser" <nickf@ontko.com> writes: > > Does PostgreSQL support (or some day will support) "partitioned tables"? > > It's not on anyone's radar screen AFAIK. We would need the Hubble telescope to see that one. :-) -- 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
"Tom Lane" <tgl@sss.pgh.pa.us> wrote in message news:27503.991845186@sss.pgh.pa.us... > "Nick Fankhauser" <nickf@ontko.com> writes: > > Does PostgreSQL support (or some day will support) "partitioned tables"? > > It's not on anyone's radar screen AFAIK. > > > Alternately, does anyone have an idea about how to address this need in a > > different way using existing tools? > > Make a view that's a UNION of the component tables, plus rules that > cause inserts to go into the appropriate components. Tried this in 7.1.2, but it returns ERROR: "Views on unions not implemented." > regards, tom lane
"Brian Baquiran" <brianb@edsamail.com> writes:
>> Make a view that's a UNION of the component tables, plus rules that
>> cause inserts to go into the appropriate components.
> Tried this in 7.1.2, but it returns ERROR: "Views on unions not
> implemented."
Then you are not using 7.1.2. 7.0.* I'd believe.
regards, tom lane
On Wed, Jun 06, 2001 at 09:55:55AM -0500, Nick Fankhauser wrote: > > Alternately, does anyone have an idea about how to address this need in a > different way using existing tools? On Linux, try RAID 0. Read Software-RAID-HOWTO. Anuradha -- Debian GNU/Linux (kernel 2.4.6-pre6) "A mind is a terrible thing to have leaking out your ears." -- The League of Sadistic Telepaths