On Sun, 18 Oct 2009, Tom Lane wrote:
Gerhard Wiesinger writes:
Since getSums() is a cursor and is complex and takes long time getSums
should only be evaluated once. Is there a better solution available to
get both columns from the function in the select?
You need a sub-select, along the line
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> Well, you can't. Each database has it's own pg_class (and other)
> catalog table and tables in any given database are not visible from
> others.
Ah well of course, that's the answer to my question. Only the entries for
the tables in the database to which I am currently connected are visible, so
On Oct 18, 2009, at 5:02 PM, Scott Ribe wrote:
I've figured out how to use the catalogs to get from table name to
name of
file(s) on disk, and also the toast files. But what I don't see is
how to
handle the case where a cluster contains multiple databases with
tables of
the same name--I fa
I've figured out how to use the catalogs to get from table name to name of
file(s) on disk, and also the toast files. But what I don't see is how to
handle the case where a cluster contains multiple databases with tables of
the same name--I fail to follow the oid keys somewhere along the way.
I do
Hi Kirk,
How's it going?
You can use pg_dump on the local host to access a db on a remote host, & as the
output is just SQL, pipe this directly intp a psql command, thus
replicating/migrating a database.
One note, if you are doing this with a PostGIS db, I find it works better to
create an em
Gerhard Wiesinger writes:
> Since getSums() is a cursor and is complex and takes long time getSums
> should only be evaluated once. Is there a better solution available to
> get both columns from the function in the select?
You need a sub-select, along the lines of
SELECT
cur_date,
(gs).su
Hello,
I'm having a problem with the following:
CREATE TYPE Sums AS (sum_m1 double precision, sum_m2 double precision);
CREATE TYPE date_m1_m2 AS (cur_date date, sum_m1 double precision, sum_m2
double precision);
CREATE OR REPLACE FUNCTION getSums(IN start_ts timestamp with time
zone, IN stop
On Sat, 2009-10-17 at 20:02 -0700, yuliada wrote:
> I have a large database and I'm trying to execute delete on a table which
> has some related tables. The query fails with following error:
> ERROR: out of memory
> DETAIL: Failed on request of size 1048576.
>
> I'm new to postgresql and I'm cu
On 18/10/2009 11:30, Alban Hertroys wrote:
> Short of enumerating those results in your application, the easiest
> approach is probably to wrap your query in a join with generate_series
> like so:
>
> SELECT a, s.b
> FROM (
> SELECT a
> FROM table1
> ORDER BY a DESC LIMIT 5
> ) AS t1,
David Spadea writes:
> I'm looking to do some reporting on tablespace usage, and wanted to be able
> to determine how much of the space a table physically occupies is actually
> in use.
contrib/pgstattuple can help you with this.
regards, tom lane
--
Sent via pgsql-gene
Hi all,
I'm looking to do some reporting on tablespace usage, and wanted to be able
to determine how much of the space a table physically occupies is actually
in use.
1. I know I can get n_live_tup and n_dead_tup from pg_stat_all_tables, but I
don't think that really answers the question entirely
2009/10/14 Josip :
> Hello,
>
> Could somebody please try to help me with this problem?
> So, let’s say that I have the query:
>
> CREATE SEQUENCE c START 1;
>
> SELECT a, nextval('c') as b
> FROM table1
> ORDER BY a DESC LIMIT 5;
>
> I.e., I want to pick the 5 largest entries from table1 and show
On 14 Oct 2009, at 19:05, Josip wrote:
Hello,
Could somebody please try to help me with this problem?
I.e., I want to pick the 5 largest entries from table1 and show them
alongside a new index column that tells the position of the entry. For
example:
a | b
82 | 5
79 | 4
34 | 3
12
2009/10/18 yuliada
>
> Hello
>
> I have a large database and I'm trying to execute delete on a table which
> has some related tables. The query fails with following error:
> ERROR: out of memory
> DETAIL: Failed on request of size 1048576.
>
> I'm new to postgresql and I'm currently trying to f
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