Herbert Simon must be spinning in his grave...or smiling wisely. What
does a human do with a petabyte of data?
But when a desktop machine for $1700 retail has a terabyte of storage,
the unix operating system, 4 gigs of memory, and an amazing 27 inch
display, I guess hardware isn't the
Dann,
There really are domains that big, so that there is no more normalization or
other processes to mitigate the problem.
Examples:
Microsoft's registered customers database (all MS products bought by any
customer, including operating systems)
Tolls taken on the New Jersey road system for
I have a table with an xml column, created an index as follows:
*CREATE INDEX xml_index*
* ON test*
* USING btree*
* (((xpath('//*/ChangedBy/text()'::text, external_attributes))[1]::text));*
And here is my select statement:
*Select uuid from t *
* where (xpath('//*/ChangedBy/text()',
On 27 May 2010 12:22, Chris Roffler croff...@earthlink.net wrote:
I have a table with an xml column, created an index as follows:
CREATE INDEX xml_index
ON test
USING btree
(((xpath('//*/ChangedBy/text()'::text, external_attributes))[1]::text));
And here is my select statement:
Select
command output for mentioned db : ' my_db_name | 42 GB '
I don't print query results to logfile. I restore my system logs to db.
I have a lot of live ( growing ) logs on my machine and I register these
logs to db.
My essential question is that why don't I reclaim disk space though I run
this
Firstly, thanks for your explanations...
Are you attempting a one-time space reduction or are you having general
bloat issues?
Unfortunately, I have growing bloat issues so I want to reduce space as it
filled up.
Thus I wrote a script but as I said before it doesn't reclaim disk space.
alter a table column to its own type, like this:
alter table foo alter column my_counter type integer; -- my_counter
is already an integer
Is that really reclaim disk space and how ??
For example; if 'my_counter' column is already integer,
why do I alter this column to integer again ?
Hi There
I would like to find out where I can download Postgresql 8.1.7 rpm for
Redhat 5.5. I'm trying to load an application that requires it. I've
tried to download it from your site but the link times out.
Any help will be appreciated.
Regards
Faiyaz Allie
Operations Manager
Tried that same thing
On Thu, May 27, 2010 at 1:53 PM, Thom Brown thombr...@gmail.com wrote:
On 27 May 2010 12:22, Chris Roffler croff...@earthlink.net wrote:
I have a table with an xml column, created an index as follows:
CREATE INDEX xml_index
ON test
USING btree
I've had a reporting database with just about a billion rows. Each row
was horribly large because the legacy schema had problems. We partitioned
it out by month and it ran about 30 million rows a month. With a reasonably
large box you can get that kind of data into memory and indexes are
almost
On 27 May 2010 14:48, Nikolas Everett nik9...@gmail.com wrote:
I've had a reporting database with just about a billion rows. Each row
was horribly large because the legacy schema had problems. We partitioned
it out by month and it ran about 30 million rows a month. With a reasonably
large
Say I have a table that stores state transitions over time like so:
id, transitionable_id, state1, state2, timestamp
I'm trying to write a query that coalesces changes in state2 away to produce
just a list of transitions of state1. I guess it would look something like
SELECT state1,
Lost me a bit, do you mean DISTINCT?
select distinct state1, first(timestamp) from table
On May 27, 2010, at 10:04 AM, Nikolas Everett wrote:
Say I have a table that stores state transitions over time like so:
id, transitionable_id, state1, state2, timestamp
I'm trying to write a query
hi,
i tried to compile postgres 8.3.11 on SCO OpenServer 5.0.7, but ...
when the xlog.o is being compiled i have the next error:
/usr/tmp/ccihgiYL.s: 1113: syntax error at name f
/usr/tmp/ccihgiYL.s: 1113: syntax error at integer constant: 1
i dont have copy of that assembly file because
Sorry. Here is the setup:
CREATE TABLE test (id BIGSERIAL PRIMARY KEY, state1 INT NOT NULL, state2 INT
NOT NULL, timestamp TIMESTAMP);
INSERT INTO test (state1, state2, timestamp) VALUES (1, 1, now() - interval
'12 hours');
INSERT INTO test (state1, state2, timestamp) VALUES (1, 2, now() -
On Thu, May 27, 2010 at 10:42 AM, erobles erob...@sensacd.com.mx wrote:
hi,
i tried to compile postgres 8.3.11 on SCO OpenServer 5.0.7, but ... when
the xlog.o is being compiled i have the next error:
/usr/tmp/ccihgiYL.s: 1113: syntax error at name f
/usr/tmp/ccihgiYL.s: 1113: syntax error
On Tue, May 25, 2010 at 05:28:10PM +0200, Janning wrote:
Our hibernate stack uses prepared statements. Postgresql is caching the
execution plan. Next time the same statement is used, postgresql reuses the
execution plan. This saves time planning statements inside DB.
It only uses the cached
Changed the create index statement to : USING hash and it seems to work.
Any idea why btree does not work ?
Thanks
Chris
On Thu, May 27, 2010 at 3:47 PM, Chris Roffler croff...@earthlink.netwrote:
Tried that same thing
On Thu, May 27, 2010 at 1:53 PM, Thom Brown thombr...@gmail.com
erobles erob...@sensacd.com.mx writes:
i tried to compile postgres 8.3.11 on SCO OpenServer 5.0.7, but ...
when the xlog.o is being compiled i have the next error:
/usr/tmp/ccihgiYL.s: 1113: syntax error at name f
/usr/tmp/ccihgiYL.s: 1113: syntax error at integer constant: 1
Looks like
i have been using gcc 2.95.2 to compile
On 05/27/2010 10:02 AM, Tom Lane wrote:
erobleserob...@sensacd.com.mx writes:
i tried to compile postgres 8.3.11 on SCO OpenServer 5.0.7, but ...
when the xlog.o is being compiled i have the next error:
/usr/tmp/ccihgiYL.s:
On 5/27/2010 9:04 AM, Nikolas Everett wrote:
Say I have a table that stores state transitions over time like so:
id, transitionable_id, state1, state2, timestamp
I'm trying to write a query that coalesces changes in state2 away to
produce just a list of transitions of state1. I guess it
erobles erob...@sensacd.com.mx writes:
i have been using gcc 2.95.2 to compile
At least get onto 2.95.3 ;-). I've been using that version on HPPA
for quite awhile and haven't tripped across any bugs. But in any case
these are stone-age versions.
regards, tom
On 27/05/2010 4:44 PM, Faiyaz Allie wrote:
Hi There
I would like to find out where I can download Postgresql 8.1.7 rpm for
Redhat 5.5. I’m trying to load an application that requires it. I’ve
tried to download it from your site but the link times out.
What download link are you using? Which
On 27/05/2010 10:42 PM, erobles wrote:
hi,
i tried to compile postgres 8.3.11 on SCO OpenServer 5.0.7
Possibly stupid question: Why?
Do you need the Pg server to run on SCO OpenServer? Or just a client?
Have you considered running your (presumably SCO-based) client with a
network connection
On 5/27/2010 9:45 AM, Nikolas Everett wrote:
Sorry. Here is the setup:
CREATE TABLE test (id BIGSERIAL PRIMARY KEY, state1 INT NOT NULL,
state2 INT NOT NULL, timestamp TIMESTAMP);
INSERT INTO test (state1, state2, timestamp) VALUES (1, 1, now() -
interval '12 hours');
INSERT INTO test
The 10 and 11 hour interval are being skipped because I'm only interested in
the transitions of state 1. State 1 only transitioned three times at now -
12, now - 9 and now - 8.
The table has both transitions in it because I frequently care about them
both together. I just don't in this case.
On
Got it:
SELECT state1, timestamp
FROM (SELECT state1, timestamp, lag(state1) OVER (ORDER BY timestamp)
FROM test) as foo
WHERE state1 != lag OR lag IS NULL
ORDER BY timestamp;
state1 | timestamp
+
1 | now() - interval '12 hours'
On 05/27/2010 10:29 AM, Craig Ringer wrote:
On 27/05/2010 10:42 PM, erobles wrote:
hi,
i tried to compile postgres 8.3.11 on SCO OpenServer 5.0.7
Possibly stupid question: Why?
Do you need the Pg server to run on SCO OpenServer?
Yes, i need it :-P
Before i have running pg 7.2 after we
Nikolas Everett nik9...@gmail.com wrote:
Sorry. Here is the setup:
CREATE TABLE test (id BIGSERIAL PRIMARY KEY, state1 INT NOT NULL, state2 INT
NOT NULL, timestamp TIMESTAMP);
INSERT INTO test (state1, state2, timestamp) VALUES (1, 1, now() - interval
'12 hours');
INSERT INTO test (state1,
Hi all,
I just got quite confused on the exact semantics
of RETURNING expressions INTO target with an update statement.
And while trying to resolve failed to find an answer in the docs.
Question was whether - in case expression is involving a column that is
assigned by the update itself -
the
On 27 May 2010, at 18:12, Rainer Pruy wrote:
Hi all,
I just got quite confused on the exact semantics
of RETURNING expressions INTO target with an update statement.
And while trying to resolve failed to find an answer in the docs.
Question was whether - in case expression is involving a
John Gage schrieb:
Please forgive this intrusion, and please ignore it, but how many
applications out there have 110,000,000 row tables? I recently
multiplied 85,000 by 1,400 and said now way Jose.
I have two private applications with about 250,000,000 rows a table. I
could cluster them,
Hi All,
In my application we are using postgres which runs on an
embedded box. I have configured autovacuum to run once for every one
hour. It has 5 different databases in it. When I saw the log messages,
I found that it is running autovacuum on one database every hour. As a
result, on my
I just wonder whether the two are equivalent from user perspective: As far
as I see, you can always rewrite a multi-command rule as a conditional rule
and vice versa. Further more, Postgres seems to execute all the conditional
rules, just as if it would execute all the commands in the one
John Gage schrieb:
Herbert Simon must be spinning in his grave...or smiling wisely. What
does a human do with a petabyte of data?
for example i have a private search-engine for my most often used sites.
google and the other ones always know just a part of the whole site, my
own one knowns
I am not sure if EXECUTE 'SELECT * FROM table correctly sets FOUND
variable.
EXECUTE 'SELECT * FROM ' || quote_ident(stmt.tablename) || ' limit 1';
if found then
end if;
Is there other way to check if EXECUTE 'SELECT ...' found something or
not?
--
Sent via pgsql-general mailing list
On 05/23/2010 02:15 AM, rihad wrote:
In this query:
UPDATE foo
SET allocated_to=?
WHERE id=(SELECT MIN(id) FROM foo WHERE allocated_to IS NULL)
AND allocated_to IS NULL
RETURNING id
Isn't the AND allocated_to IS NULL clause redundant?
--
Lew
--
Sent via pgsql-general mailing list
Hi,
On my mandriva linux, I don't have problem to build pgpool 2.3.3 with
postgresql 8.4.2. But when I upgraded to 8.4.4, I cannot build pgpool
again due to the libdl.so is not required in libpq.so (from the ldd
command). Do you know how to build the 8.4.4 so that libdl.so is
required in
2010/5/25 Bogdan Gusiev agre...@gmail.com:
I am not sure if EXECUTE 'SELECT * FROM table correctly sets FOUND
variable.
no - it doesn't it
EXECUTE 'SELECT * FROM ' || quote_ident(stmt.tablename) || ' limit 1';
if found then
end if;
Is there other way to check if EXECUTE 'SELECT
On Thu, 2010-05-27 at 10:44 +0200, Faiyaz Allie wrote:
I would like to find out where I can download Postgresql 8.1.7 rpm for
Redhat 5.5. I'm trying to load an application that requires it
I'm not sure that you will be able to find 8.1.7 around. 8.1.21 is the
latest on 8.1, and I think your
On 27 May 2010, at 12:36, Davor J. wrote:
I just wonder whether the two are equivalent from user perspective: As far
as I see, you can always rewrite a multi-command rule as a conditional rule
and vice versa. Further more, Postgres seems to execute all the conditional
rules, just as if it
I have a large table (200 million rows) with a column ( 'url' character
varying(255)) that I need to be unique.
Currently I do this via a UNIQUE btree index on (lower(url::text))
The index is huge, and I would like to make it much smaller. Accesses to
the table via this key are a tiny portion
On Tue, May 25, 2010 at 7:48 PM, Gary Fu gary...@sigmaspace.com wrote:
Hi,
On my mandriva linux, I don't have problem to build pgpool 2.3.3 with
postgresql 8.4.2. But when I upgraded to 8.4.4, I cannot build pgpool again
due to the libdl.so is not required in libpq.so (from the ldd command).
On Mon, May 24, 2010 at 6:23 PM, venu madhav venutaurus...@gmail.com wrote:
Hi All,
In my application we are using postgres which runs on an
embedded box. I have configured autovacuum to run once for every one
hour. It has 5 different databases in it. When I saw the log messages,
I
Thanks.
2010/5/26 Tom Lane t...@sss.pgh.pa.us
Or Kroyzer orkroy...@gmail.com writes:
I am using postgres 8.3.1,
... you really ought to be using 8.3.something-recent ...
and have implemented warm standby very much like
the one described in the high availability documentation on this
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