On Tue, Aug 29, 2006 at 11:02:12AM -0500, Ron Johnson wrote:
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Hi,
Does PostgreSQL support them?
Not yet.
Cheers,
D
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*/
)
RETURNS SETOF date
LANGUAGE sql
AS
$$
SELECT
$1 + s.i
FROM generate_series(
0,
$2 - $1
) AS s(i)
WHERE
extract(
DOW
FROM
$1 + s.i
) NOT IN (
0, /* Sunday */
6 /* Saturday */
);
$$;
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On Sat, Jul 29, 2006 at 09:14:16PM -0400, Greg Sabino Mullane wrote:
Today on IRC David Fetter and some others were discussing version
numbers and we realized that although libpq now provides the version of
Postgres as a number, this is still a wheel that is being reinvented by
apps many times
Folks,
I'm looking for user experiences with Jasper Reports with PostgreSQL
so I can give $client the low-down on this system, especially in
comparison to Business Objects. Please let me know if you're using it
or have assessed it in some systematic way.
Cheers,
D
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this is a SELinux problem. How do I set the policy to
allow for this, or if that's not possible, how do I disable SELinux?
Thanks in advance :)
Cheers,
D
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On Wed, Aug 02, 2006 at 04:47:36PM -0700, David Fetter wrote:
Folks,
This may have come up before, but I didn't see a specific answer in
the archives.
When I try to do:
CREATE TABLESPACE foo LOCATION '/path/to/foo/which/is/not/under/$PGDATA';
I get:
ERROR: could not set
with
their types. Shall I dig up that code this weekend?
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D
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On Thu, Jul 13, 2006 at 09:22:56AM -0400, Merlin Moncure wrote:
On 7/13/06, David Fetter [EMAIL PROTECTED] wrote:
On Wed, Jul 12, 2006 at 11:37:04PM -0400, Tom Lane wrote:
Back when, I submitted a psql patch to get the input names along
with their types. Shall I dig up that code this weekend
On Thu, Jul 13, 2006 at 03:39:34PM +0200, Peter Eisentraut wrote:
Am Donnerstag, 13. Juli 2006 15:16 schrieb David Fetter:
Back when, I submitted a psql patch to get the input names along
with their types. Shall I dig up that code this weekend?
Seems reasonable, as long as it doesn't make
,
Not this week, but who knows about next week?
shall i use timestamptz anyway?
Yes. Timestamptz is the one. :)
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D
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TIP 4: Have you searched our list archives
the
connect identifier specified
This means you need to fix your connect identifier for Oracle so that
it works both locally and remotely. It's a bug in your script, not in
PostgreSQL, so I'm moving this to -general :)
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D
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to go. I don't know whether the more file-like lo
interface can be used this way, but it's seldom worth the trouble
anyhow.
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D
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Remember
of the major headaches of a Slony-I setup. I also noticed that
pgAdmin 1.6-to-be has at least some of those hooks. Any ETA on that?
Cheers,
D
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at it crosseyed. I have not had to use it
for production purposes, but I can tell you that the mysql
replication regression tests fail ... irreproducibly of course ...
almost one time in two in Red Hat's build environment.
Are those tests, or at least descriptions of them, available?
Cheers,
D
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David
On Fri, Jun 30, 2006 at 01:41:53PM -0400, Tom Lane wrote:
David Fetter [EMAIL PROTECTED] writes:
On Fri, Jun 30, 2006 at 11:39:04AM -0400, Tom Lane wrote:
It might be worth pointing out that mysql's replication falls
over if you so much as look at it crosseyed. I have not had to
use
a revelation about How
Databases Should Be®. This way, you can help explain gently that
their new insight is neither new nor insightful, and that there are
some good papers http://www.cs.toronto.edu/~libkin/publ.html to
read.
Cheers,
D
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phone
Stephenson, The Big U
The insistence on no nulls, anywhere, any time, for any reason,
seems--from a practical vantage--unreasonable.
You're right. It is :)
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D
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the empty strings with NULLs.
Cheers,
D
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TIP 1: if posting
:
http://www.dbazine.com/ofinterest/oi-articles/celko22. It has a
name. You need to fix it :)
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D
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from
a perl function in this manner based on a DBI query?
See above :)
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D
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to move away
from it. Despite Date's many whines over the decades, his
still-vaporware Relational Model doesn't even vaguely approximate that
criterion.
Cheers,
D
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Skype
On Tue, Jun 13, 2006 at 12:51:57PM -0400, Merlin Moncure wrote:
On 6/13/06, David Fetter [EMAIL PROTECTED] wrote:
SQL was a quick and dirty hack (Systems R and R* needed some way
to interface with data) with multiple deficiencies recognized and
documented right within the very first paper
...
Alphora. I don't think it meets the definition of market traction
(and it overlays on top of sql), but it's pretty neat.
It may be neat, but it's not Date's Relational Model because it allows
NULLs.
Cheers,
D
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://en.wikipedia.org/wiki/Relational_algebra, and as a direct
consequence, you can't do this simple but interesting thing with it.
What say we just stop right there and call Date's Relational Model
what it is: a silly edifice built atop wrong premises.
Cheers,
D
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that I don't know the
birthdate, which is rummage through all my records trying to find the
birthdate.
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D
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the theory, not
reality, is wrong.
What's with the insults? Cool off or something...
I sent you private mail in response to your private email. You
decided to send it to a public list, moonbat. And you still haven't
actually used any logic. You've just alleged that you have.
Cheers,
D
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On Fri, Jun 09, 2006 at 03:18:54PM -0400, Robert Treat wrote:
On Friday 09 June 2006 12:39, David Fetter wrote:
On Fri, Jun 09, 2006 at 12:29:59PM -0400, A.M. wrote:
Yes, and all SQL products worth their salt include some languages
to provide iteration and other processing that SQL
theory with repetition of elements allowed. This in
turn makes aggregates easy and natural to implement.
[2] A boolean value can take the values true, false and unknown.
[3] http://en.wikipedia.org/wiki/Phlogiston
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On Thu, Jun 08, 2006 at 05:22:46PM -0500, Scott Marlowe wrote:
On Thu, 2006-06-08 at 17:14, David Fetter wrote:
Pascal, Date, and Darwen have been alleging for years, with
increasing shrillness, that DBMSs should be based on set theory
and 2-value logic. I say alleging because they have
On Thu, Jun 08, 2006 at 06:09:21PM -0700, Trent Shipley wrote:
On Thursday 2006-06-08 15:14, David Fetter wrote:
On Thu, Jun 08, 2006 at 05:21:07AM -0700, [EMAIL PROTECTED] wrote:
on bag theory[1] and 3-value logic[2]. Until they come up with a
testable system, or Hell freezes over
a real need for.
You might some day. One of PostgreSQL's Killer Features(TM) is its
radical extensibility.
Cheers,
D
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that 7.3.3 will work with FC5.
If you're going with something in the (as you point out, Jurassic)
7.3.x series, you need to make sure that 7.3.15 is running, as all
previous versions have known security and/or data loss bugs.
Cheers,
D
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phone: +1
that the only
difference between Q1 and Q2 above is the word LEFT.
HTH :)
Cheers,
D
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something that was never
implemented?
That's because variance of foo is measured in foo^2 units. What is
the square of an interval?
Cheers,
D
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Remember
.
If that's your goal, consider the BSDL or similar. There are lots of
outfits where people are forbidden flat-out to get GPL code.
Cheers,
D
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:)
Cheers,
D
[1] Where doesn't work depends both on the particular user and on
the problem at hand.
[2] Anybody who first touched a computer when they were an adult,
e.g.
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TIP 5: don't forget to increase your free space map
(NEW.num, NEW.foo, NEW.bar);
);
HTH :)
Cheers,
D
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TIP 4
also consider DBI-Link, but I'm pretty sure that's not a fit
for this case.
Appreciate any advice. Thanks.
In future, please post in plain text, as many of us have trouble
reading HTML ;)
Cheers,
D
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ON (f.foo_id = b.foo_id)
LEFT JOIN
quux q
ON (f.foo_id = q.foo_id)
;
Of course, this only reflects the state of the DB at the time the
query is issued, so you'll have to be prepared to catch errors from ON
DELETE RESTRICT anyhow.
HTH :)
Cheers,
D
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://www.postgresql.org/docs/current/static/ddl-partitioning.html
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D
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a cookbook db right now)
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TIP 5: don't forget to increase your
whole job is to monitor those comments and make patches.
I'd like to make a Modest Proposalâ¢: Let's take down the interactive
documents and, in their place, put up a request that doc patches be
sent to -docs.
What say?
Cheers,
D
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.
I'm voicing a rejection for 'em again on the same grounds. Until we
have a person whose paid, full-time job is web-comment rassling, this
is a non-starter.
Cheers,
D
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TIP 4: Have you searched our list archives
it
again. I was only thinking of modifying the minimum necessary.
Yeah, unfortunately there's no support for modifying constraints.
Well, except in the sense of dropping and re-creating them inside a
transaction :)
Cheers,
D (transactional DDL is fantastic :)
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David Fetter [EMAIL PROTECTED
to get data back out when you put it in, it isn't.
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D
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TIP 6: explain analyze is your friend
On Tue, Feb 14, 2006 at 02:43:05PM -0800, CSN wrote:
I have a bunch of timestamps like:
2005-11-20 20:45:48.281653-07
How can I change it so they never get saved with
seconds fractions?
You could set the fields to be of type TIMESTAMP(0) WITH TIME ZONE.
Cheers,
D
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)
WHERE bar.foo_id IS NULL;
IF childless_foo_count 0 THEN
RAISE EXCEPTION 'Each foo must have at least one bar.';
END IF;
RETURN NULL;
END;
$$;
CREATE TRIGGER foo_after
AFTER INSERT OR UPDATE ON foo
FOR EACH STATEMENT
EXECUTE PROCEDURE foo_trg();
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David Fetter
to change in order to implement this? There
appear to be things in src/backend/parser and src/bin/psql that bear
on this. Would libpq and ecpg need to change?
Cheers,
D
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?
Cheers,
D
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TIP 4: Have you searched our list archives?
http://archives.postgresql.org
it belongs)
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TIP 6: explain analyze is your friend
never belongs in production code in the 1st place?
unless...is it possible to safely modify the |attnum field of
||pg_attribute? I know we should never directly modify system
tables but..|
You're right. No 'but' involved :)
Cheers,
D
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phone
is *much* harder to do right if you're storing
phone numbers from more than one country.
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D
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TIP 9: In versions below 8.0
,
D
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TIP 2: Don't 'kill -9' the postmaster
://archves.postresql.org/ for a lot of this. For things you
don't find there, you can either post here or go to
irc://irc.freenode.net/postgresql, where there are friendly, helpful
people, and occasionally Yours Truly.
Cheers,
D
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(
SELECT t.my_array[s.i]
FROM generate_series(
array_lower(my_array,1), /* usually 1 */
array_upper(my_array,1)
) AS s(i)
ORDER BY t.my_array[s.i]
) AS sorted_array
FROM my_table t
ORDER BY sorted_array DESC;
HTH :)
Cheers,
D
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TIP 2: Don't 'kill -9' the postmaster
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TIP 3: Have you checked our extensive FAQ
,
string_to_array( array_dims(array[[1,2],[3,4]]) ,'][') AS pieces,
array_upper( string_to_array( array_dims(array[[1,2],[3,4]]) ,']['), 1) AS
number of dimensions
;
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D
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EXCEPT
SELECT a,b,c FROM baz);
HTH :)
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D
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TIP 6: explain analyze is your friend
not belong.
Pick one database back-end and stick with it. It's ever so much
easier to deal with.
OK, that's my $.02 :)
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D
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]
I can't think of a way to push the aggregate with the order by into a
subquery that still produces the proper grouping (by bar_id). Any
hints or suggestions?
HTH :)
Cheers,
D
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Remember
?
You can do it in SQL, at least in 8.0 and later :)
INSERT INTO bar(blurf)
SELECT (string_to_array('AA-BB-CC-DD','-'))[s.i] AS foo
FROM generate_series(
array_lower(string_to_array('AA-BB-CC-DD','-'),1),
array_upper(string_to_array('AA-BB-CC-DD','-'),1)
) AS s(i);
Cheers,
D
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, or in psql \d by itself
gets you everything :)
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,
David.
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TIP 4: Have you searched our list archives?
http://archives.postgresql.org
.
HTH :)
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D
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On Sun, Oct 30, 2005 at 03:52:23PM +0100, Tino Wildenhain wrote:
Am Sonntag, den 30.10.2005, 06:29 -0800 schrieb David Fetter:
On Fri, Oct 28, 2005 at 09:57:03PM -0400, blackwater dev wrote:
In MySQL, I can use the replace statement which either updates
the data there or inserts
On Sun, Oct 30, 2005 at 11:47:41PM +0800, Lincoln Yeoh wrote:
At 06:29 AM 10/30/2005 -0800, David Fetter wrote:
On Fri, Oct 28, 2005 at 09:57:03PM -0400, blackwater dev wrote:
In MySQL, I can use the replace statement which either updates
the data there or inserts
-array.html
to get a nice, flexible system. You can make a static one if you
like. One thing about this approach is that you then have to exclude
NULLs from your search because PostgreSQL arrays can't yet hold NULLs.
Cheers,
D
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by reading the documentation entirely but it
is not very helpful if your production database went wrong and you
are quite a bit in a hurry.
That's a great idea. Please post a doc patch with some of the
troubleshooting tips you have in mind :)
Cheers,
D
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relies on pg
8.1 features of PL/Perl. Further improvements...well, you're right.
I'll need a generic way to get predicates at run time from one place
and push them to an opaque place, in my case, a set-returning
function, at run time.
Cheers,
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gotcha?
Nope. Thinko on your end. Just make sure your inner query is
guaranteed to return exactly one row, and you'll be good. :)
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D
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be, but somebody would have sue, and then they would have
to win against Oracle. I don't think that MySQL AB has the resources
to fight such a legal action, even assuming they'd win it.
Cheers,
D
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On Mon, Oct 10, 2005 at 11:29:24AM -0700, Dann Corbit wrote:
Consider what happened to Stak verse MS. Stak won the court case
but still went out of business.
My point exactly ;)
Cheers,
D
-Original Message-
From: David Fetter [mailto:[EMAIL PROTECTED]
Sent: Monday, October 10
example below, while a little more complicated to write and
use, handles this.
http://developer.postgresql.org/docs/postgres/plpgsql-control-structures.html#PLPGSQL-ERROR-TRAPPING
SQL:2003 standard MERGE should fix all this.
Cheers,
D
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phone
On Fri, Oct 07, 2005 at 08:21:31PM -0500, Jim C. Nasby wrote:
On Fri, Oct 07, 2005 at 02:07:47AM -0700, David Fetter wrote:
On Fri, Oct 07, 2005 at 11:47:26AM +0300, WireSpot wrote:
But... will the resulting dump be consistent as far as foreign
keys are concerned? Or will the current -t
On Fri, Oct 07, 2005 at 11:47:26AM +0300, WireSpot wrote:
On 10/7/05, David Fetter [EMAIL PROTECTED] wrote:
Here's my thoughts on a summary:
[-t [table | glob]]...# 0 or more -t options
[-T [table | glob]]...# 0 or more -T options
[--include-tables-from-file f
investment in not being wrong on
an important matter is too big.
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D
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TIP 5: don't forget
port your
product to PostgreSQL and only offer it on platforms that allow you to
run PostgreSQL natively.
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D
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into consideration. I only get one table in the dump.
Right. That's on the TODO list but not done yet :-(.
There have been several patches against pg_dump to do both
multiple-table inclusion and multiple-table exclusion. These may get
into 8.2, as they missed 8.1.
Cheers,
D
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vs. SQL standard's making that AS optional there)
Third, there are real gotchas, but those are generally reported as
bugs on pgsql-bugs and acted upon as such.
Cheers,
D
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On Thu, Oct 06, 2005 at 05:29:14PM -0500, Jim C. Nasby wrote:
On Thu, Oct 06, 2005 at 12:29:51PM -0700, David Fetter wrote:
* Problems that will be fixed in the next version of PostgreSQL.
This means that problems get on developers' radar and get fixed.
I suppose by some extremely un
-from-file f]
[--exclude-tables-from-file f]
where globs get expanded just the way they are in psql, and the
exclude is evaluated after the include to remove any tables where they
might conflict. I don't think regex matching is needed or good.
Does this make sense?
Cheers,
D
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London, Foo McBar said, ' ... '
One way to keep the FUD to a minimum is to hold the FUDster personally
responsible for it.
Cheers,
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, for example, your customer table to several different
databases. The replicated tables are read-only on the slaves, but
that shouldn't present insurmountable problems.
HTH :)
Cheers,
D
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David Fetter [EMAIL PROTECTED] http://fetter.org/
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Remember
://sqlmanager.net/en/products/postgresql/manager
Cheers,
D
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TIP 5: don't forget to increase your free space
:)
Cheers,
D
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TIP 3: Have you checked our extensive FAQ?
http://www.postgresql.org/docs
if someone could
present something on Pl/perl there. I'll even volunteer to help
write it. :)
I'd be delighted to give a talk on DBI-Link, of which PL/PerlU is the
essential component :)
Cheers,
D
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David Fetter [EMAIL PROTECTED] http://fetter.org/
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have to guess
or perhaps make them all text.
I've attached a sample implementation of Michael's suggestion.
I've attached what I hope is a slightly improved one :)
Cheers,
D
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://www.postgresql.org/docs/current/static/sql-listen.html
Cheers,
D
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TIP 6: explain analyze is your
a custom aggregate like array_accum()
http://www.postgresql.org/docs/current/static/xaggr.html
combined with the array_to_string() like this:
SELECT array_to_string(array_accum(email), ', ') AS emails
FROM person_email;
Hope this helps :)
Cheers,
D
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there.)
This sounds like a case for PostgreSQL's nifty DISTINCT ON functionality.
http://www.postgresql.org/docs/current/static/sql-select.html#SQL-DISTINCT
HTH :)
Cheers,
D
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/
Cheers,
D
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TIP 4: Have you searched our list archives?
http://archives.postgresql.org
this one, so I don't know.
HTH :)
Cheers,
D
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TIP 9: In versions below 8.0, the planner will ignore your
the
super-table?
No.
Cheers,
D
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TIP 4: Have you searched our list archives?
http
On Thu, Aug 11, 2005 at 10:15:11AM -0400, Jeff Boes wrote:
How does one raise an exception from a PL/Perl function?
Specifically, this is a trigger function. Is it as simple as die
msg?
elog(ERROR, $errmsg)
works.
Cheers,
D
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anonymous PL/SQL blocks. I'm hoping we can
talk them into helping us do in-line anonymous PL/Foo based on what
they've done for this. :)
Cheers,
D
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thing does?
Yikes! Another unintended use. :P
Anybody interested in contributing to this?
Cheers,
D (who is ashamed about how long it's been since his last commit)
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pretty much stuck with either writing triggers that modify a
cache table or having your performance the way it is now.
Cheers,
D
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