Somebody is making a very specific claim that Postgres can support a
limited number of rows:
"INPS (a data forensics team) said that there is 7 main Databases all
hosted at different data centers but linked over a type of 'cloud' Each
database uses PostGRESSQL which would mean the most amount
Stefan Keller writes:
> Any ideas on how to index my hstore attribute?
Use a GIST or GIN index. The only thing that a btree index on hstore
can do for you is to support equality comparisons on the whole hstore
value, which is pretty unlikely to be what you're after.
rega
David Johnston wrote:
Given that you are actively implementing the code that uses the 1 and 2 I
don't see how it is that egregious. When generating calculated fields it is
cleaner than the alternative:
Select trunc(distance * 10.)/10., count(*)
From doc_ads
Group by (trunc(distance * 10.))
Or
Hi,
2011/3/13 Viktor Nagy
> when trying to insert a long-long value, I get the following error:
>
> ERROR: Index row size 3120 exceeds maximum 2712 for index
> "ir_translation_ltns"
> HINT: Values larger than 1/3 of a buffer page cannot be indexed.
> Consider a function index of an MD5 hash of
Given that you are actively implementing the code that uses the 1 and 2 I
don't see how it is that egregious. When generating calculated fields it is
cleaner than the alternative:
Select trunc(distance * 10.)/10., count(*)
>From doc_ads
Group by (trunc(distance * 10.))
Order by (trunc(distance *
Thom Brown writes:
> Excellent! Magnus is a very valuable contributor to the PostgreSQL
> community and I think the community can only benefit from this addition to
> the core team.
+1
Congrats, Magnus!
--
Dimitri Fontaine
http://2ndQuadrant.fr PostgreSQL : Expertise, Formation et Support
disclaimer : I didn't read the presentation paper Greg Smith talked
about yet, nor his partitioning chapter yet, so it might be about the
same trick.
Phoenix Kiula writes:
> How about doing this with existing massive tables? (Over 120 million rows)
>
> I could create a new parent table with chil
Geoffrey Myers writes:
> So, now the question is, is this effort even worth our effort?
> What is the harm in leaving our databases SQL_ASCII encoded?
You're declaring bankruptcy on being able to make any sense of the data
you stored. Is that really what you think you need?
For converting, you
durumdara writes:
> I want to ask that have some way to install PGSQL 9.0 as two instances in
> one machine?
>
> Most important question. The OS is can be Windows or Linux.
debian and ubuntu packaging support this quite well, see pg_lsclusters
and associated man pages:
http://manpages.debian.n
On Sat, Apr 30, 2011 at 08:55:09PM +0200, Dimitri Fontaine wrote:
> hubert depesz lubaczewski writes:
> > we have n (~ 40 i think) web servers. each webserver has it's own
> > pgbouncer (in session pooling).
>
> In some cases I have found useful to have those webserver's pgbouncer
> connect to an
hubert depesz lubaczewski writes:
> we have n (~ 40 i think) web servers. each webserver has it's own
> pgbouncer (in session pooling).
In some cases I have found useful to have those webserver's pgbouncer
connect to another pgbouncer on the database host. But if your problem
is tied to real act
Alban thank for your ideas
> It probably is, the default Postgres settings are quite modest and GIN
> indexes are memory hungry.
> I think you need to increase shared_buffers. With 2.5GB of memory (such a
> strange number) the docs> suggest about 250MB.
> See
> http://www.postgresql.org/doc
re: 1 and 2. They're horrible (imho) reference to the attributes of the
returned tuple. Or at best an exposure of the implementation. :)
Order by "2" if you want the most frequent (highest counts) of your
distances at the bottom of the output (or ordery by 2 desc) if you want
them at the top o
David Johnston writes:
> No. It will not be called
> Or
> No. Postgresql does not short-circuit boolean evaluations
> ?
The correct answer is "maybe". See
http://www.postgresql.org/docs/9.0/static/sql-expressions.html#SYNTAX-EXPRESS-EVAL
regards, tom lane
--
Sent via p
I think this should do what I want
select trunc(distance * 10.)/10., count(*)
from doc_ads
group by 1 order by 1
Thanks, Joel
--
- for hire: mac osx device driver ninja, kernel extensions and usb d
What is the meaning of
group by 1 order by 2
e.g. what to the numbers 1 and 2 stand for?
What would change if I do the following?
group by 1 order by 1
On Apr 30, 2011, at 5:48 PM, Thomas Markus wrote:
> Hi,
>
> try something like this:
>
> select
>trunc(random(
Thank you Thomas!
Is there a way for the code below to determine the number of rows in the table
and use it?
Thanks, Joel
On Apr 30, 2011, at 5:48 PM, Thomas Markus wrote:
> Hi,
>
> try something like this:
>
> select
>trunc(random() * 10.)/10.
>, count(*)
> from
>generat
Hi,
try something like this:
select
trunc(random() * 10.)/10.
, count(*)
from
generate_series(1,200)
group by 1 order by 2
regards
Thomas
Am 30.04.2011 18:37, schrieb Joel Reymont:
I have a column of 2 million float values from 0 to 1.
I would like to figure out how many valu
I have a column of 2 million float values from 0 to 1.
I would like to figure out how many values fit into buckets spaced by 0.10,
e.g. from 0 to 0.10, from 0.10 to 0.20, etc.
What is the best way to do this?
Thanks, Joel
On Sat, Apr 30, 2011 at 10:34:32AM -0400, David Johnston wrote:
> No. It will not be called
> Or
> No. Postgresql does not short-circuit boolean evaluations
> ?
SQL is a somewhat declarative language. There is no "order" to
evaluation as such. So you can't talk about short circuiting either.
This
No. It will not be called
Or
No. Postgresql does not short-circuit boolean evaluations
?
On Apr 30, 2011, at 10:27, pasman pasmański wrote:
> No.
>
> 2011/4/30, Jon Smark :
>> Hi,
>>
>> Does Postgresql perform short-circuit boolean evaluation both in SQL
>> and PL/pgSQL functions? As an examp
No.
2011/4/30, Jon Smark :
> Hi,
>
> Does Postgresql perform short-circuit boolean evaluation both in SQL
> and PL/pgSQL functions? As an example, suppose I have a function called
> "do_stuff" which is computationally intensive. In the example below,
> will it be called for rows for which the fi
Hi,
Does Postgresql perform short-circuit boolean evaluation both in SQL
and PL/pgSQL functions? As an example, suppose I have a function called
"do_stuff" which is computationally intensive. In the example below,
will it be called for rows for which the first predicate (foobar.id = $1)
is false
On 04/28/2011 12:19 PM, Carlos Mennens wrote:
It seems that the 'mysql2postgres.pl' tool has instructions embedded
into the file so I ran the command as instructed to take the output
file and insert it into my PostgreSQL server and got the following
error message:
$ psql -p 5432 -h db1 -U wiki -
On 04/29/2011 10:01 PM, Greg Smith wrote:
On 04/29/2011 06:13 PM, Jeff Davis wrote:
I'm not sure which reference you found, but SFPUG is certainly active
with meetings every month.
http://pugs.postgresql.org/sfpug ; last meeting listed there is
January 2009.
Yeah, that site is kind of.
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