.
If you don't get too much feed back on this subject, just remember that topics
like this come up frequently to the point of list member exhaustion. You can
find such discussions if you search the list archive.
Regards,
Richard Broersma Jr.
---(end of broadcast
--- On Tue, 1/29/08, Ivan Sergio Borgonovo [EMAIL PROTECTED] wrote:
other than defining a function such that I can write:
SELECT ( a-b ) as pippo
FROM Yourtable
WHERE ( a-b ) = 7
UNION ALL
SELECT ( a*b ) as pippo
FROM Yourtable
WHERE ( a*b ) 12
AND a 3
UNION ALL
REFERENCES parent_table( primary_column )
ON UPDATE CASCADE;
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 4: Have you searched our list archives?
http://archives.postgresql.org/
referential integrity ON UPDATE CASCADE. This means that they database ~would~
maintain/enforce the object-type portion of the foreign key automatically for
you.
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 1: if posting/reading
),
...
);
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 4: Have you searched our list archives?
http://archives.postgresql.org/
--- On Mon, 1/7/08, Erik Jones [EMAIL PROTECTED] wrote:
From: Erik Jones [EMAIL PROTECTED]
Subject: Re: [GENERAL] many to one of many modeling question
To: Richard Broersma Jr [EMAIL PROTECTED]
Cc: Postgres General List pgsql-general@postgresql.org, Kevin Hunter
[EMAIL PROTECTED], Caktus
--- On Mon, 1/7/08, Devrim GÜNDÜZ [EMAIL PROTECTED] wrote:
wrote:
what is a botherboard?
Brotherboard -- motherboard is a bit old.
Maybe a Freudian slip? ;)
---(end of broadcast)---
TIP 5: don't forget to increase your free space map
was my understanding that all single DML statement are wrapped in their own
transaction so I thought that these two statements should preform the same.
Regards,
Richard Broersma Jr.--
-- PostgreSQL database dump
--
-- Started on 2008-01-02 05:35:55
SET client_encoding = 'UTF8';
SET
, in the second it's the COMMIT.
Thanks for the help Tom. This information is good to know.
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan
-committed records. I.E.
the record that should be equal to NEW is in fact equal to OLD.
Is this correct? Is there a way to adjust the visibility so that yet-to-be
committed tuples are seen by the trigger function?
Regards,
Richard Broersma Jr.
---(end of broadcast
instrumentation= SELECT 'infinity'::timestamptz;
timestamptz
-
infinity
(1 row)
instrumentation= SELECT 'infinity'::timestamptz::date;
date
--
-- this blank I determine was a NULL.
(1 row)
Is this correct? Shouldn't it also return an error?
Regards,
Richard Broersma Jr
was altered to be READ-ONLY. Once
this happened, postgresql wan't able to start.
After spending a quited a bit of time to dicover the cause of the problem, I
simply had to reset the directoy to be write-able.
I hope this helps.
Regards,
Richard Broersma Jr.
---(end
on your table to
use your new type.
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 6: explain analyze is your friend
---(end of broadcast)---
TIP 6: explain analyze is your friend
with [TLM].
I've noticed that one of the emails that I posted a couple of days ago was
reciently reposted with the prefix [TLM].
I wonder if someone is bouncing emails from this list.
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 4
on your table to
use your new type.
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 6: explain analyze is your friend
was altered to be READ-ONLY. Once
this happened, postgresql wan't able to start.
After spending a quited a bit of time to dicover the cause of the problem, I
simply had to reset the directoy to be write-able.
I hope this helps.
Regards,
Richard Broersma Jr.
---(end
statement.
This way the contents of the type can be seen in a base table. and it would be
easy to recreate the type when new elements are added or removed. I'll have to
play around with this in the future to see what is possible.
Regards,
Richard Broersma Jr.
---(end
up to make the transition a bit more manageable.
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 6: explain analyze is your friend
of notification to perform cross checking even though there are strictly
no pk/fk relations between these table?
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 5: don't forget to increase your free space map settings
that have ON UPDATE or ON DELETE actions
set.
I think I understand now. Thanks for the clarification.
Regards,
Richard Broersma JR.
---(end of broadcast)---
TIP 2: Don't 'kill -9' the postmaster
| table | teaminst --where is project.managers
project | project_tls | table | teaminst
project | projects| table | teaminst
(3 rows)
instrumentation=
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 1: if posting/reading through
be accessed by an unqualified table name.
I see. Thanks for the clarification.
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 6: explain analyze is your friend
--- On Sat, 12/22/07, Michael Glaesemann [EMAIL PROTECTED] wrote:
Should it return some sort of value? Should it raise
an exception?
The latter.
Thanks Michael!
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 4: Have you
to raise the
raise the trigger.
So is the purpose of knowing the reference_table OID, is that it helps to
generalize the logic of the CONSTRAINT TRIGGERS?
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 6: explain analyze is your friend
?
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 1: if posting/reading through Usenet, please send an appropriate
subscribe-nomail command to [EMAIL PROTECTED] so that your
message can get through to the mailing list cleanly
--- On Sat, 12/22/07, Tom Lane [EMAIL PROTECTED] wrote:
There's always the source code:
src/backend/utils/adt/ri_triggers.c
Thanks. I will do my best and give it a try :-)
---(end of broadcast)---
TIP 3: Have you checked our extensive FAQ?
I noticed from the 8.3 manual (CREATE TABLE section):
NOT DEFERRABLE
... Only foreign key constraints currently accept this clause. All other
constraint types are not deferrable.
Does this imply that custom CONSTRAINT TRIGGERs are not DEFERRABLE? Or are they?
Regards,
Richard Broersma Jr
What is the proper way for the function of a constraint trigger to signal where
or not referential integrity was compromised?
Should it return some sort of value? Should it raise an exception?
Regards,
Richard Broersma Jr.
---(end of broadcast
--- On Fri, 12/21/07, Richard Broersma Jr [EMAIL PROTECTED] wrote:
Does this imply that custom CONSTRAINT TRIGGERs are not
DEFERRABLE? Or are they?
Sorry dumb question. They must be deferrable since their create statement
allows for differable.
Regard,s
Richard Broersma Jr
How does a Constraint Trigger react to a referenced table when the constraint
is created implementing the FROM clause?
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 6: explain analyze is your friend
),
proj02u20411= cast( 0 as boolean),
proj02u20411= cast( -1 as boolean ),
proj02u20411= cast( 2 as boolean);
bool | bool | bool | bool
--+--+--+--
t| f| t| t
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 9
,
Richard Broersma Jr.
---(end of broadcast)---
TIP 1: if posting/reading through Usenet, please send an appropriate
subscribe-nomail command to [EMAIL PROTECTED] so that your
message can get through to the mailing list cleanly
--- On Thu, 12/13/07, Jorge Godoy [EMAIL PROTECTED] wrote:
Actually pF is measured from -1 to 1.
they tell you that they want doing some pF correction on
the facility and you
need to have that counted as well.
Thanks for the correct, and good point. :-)
Regards,
Richard Broersma Jr
Are there any planes in the works for a booth and talks for PostgreSQL?
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 1: if posting/reading through Usenet, please send an appropriate
subscribe-nomail command to [EMAIL PROTECTED
of reactive power inherent in the
inductive load of motors.
This is a perfect problem for a custom aggregate.
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 6: explain analyze is your friend
FROM VALUES ( 'cesp', 'sp' ) AS tmp( a, b )
LEFT JOIN Sp
ON (Sp.col1,Sp.col2)=(tmp.a,tmp.b)
WHERE (Sp.col1,Sp.col2) IS NULL;
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 1: if posting/reading through Usenet, please send
(Sp.col1,Sp.col2) IS NULL;
I forgot the parentheses that the FROM clause requires when using the VALUES
predicate. Also remember that this only works in PostgreSQL versions = 8.2.
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 1: if posting
Is it possible to create aggregate functions using pl/pgsql?
If not possible in plpgsql, is there any other way to create these types of
functions?
If anyone could point to the correct documentation I would be most appreciative.
Regards,
Richard Broersma Jr.
---(end
coordinate vectors(the EEs use
the term phasers) for each MCC cubical.
It seems they have need for quite a few other little aggregate functions that
they would like me to make if I can get this one done first.
Anyway thank for the push in the right direction!
Regards,
Richard Broersma Jr.
Anyway
--- On Tue, 12/11/07, Tom Lane [EMAIL PROTECTED] wrote:
Also see the overview at
http://www.postgresql.org/docs/8.3/static/xaggr.html
Thanks Tom!
---(end of broadcast)---
TIP 1: if posting/reading through Usenet, please send an appropriate
--- On Mon, 12/10/07, Ted Byers [EMAIL PROTECTED] wrote:
but how do you
do it using SQL in an RDBMS?
I believe that there is an ANSI SQL command MERGE that is yet to be
implemented into PostgreSQL.
Regards,
Richard Broersma Jr.
---(end of broadcast
After a type is created, is it possible to view the definition of this type?
---(end of broadcast)---
TIP 2: Don't 'kill -9' the postmaster
--- On Thu, 11/29/07, Usama Dar [EMAIL PROTECTED] wrote:
See if they help you
http://www.postgresql.org/docs/8.3/static/functions-enum.html
I will give this a try, thanks!
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 5: don't
the problem you where having with needing OIDs
created in your tables?
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes
--- On Wed, 11/28/07, Richard Huxton [EMAIL PROTECTED] wrote:
Name lookups. Something is trying to look up a name,
failing and it's
timing out after 60 seconds.
It seems the OP's connection string was set to localhost. Would this still
indicate a Name Loopup problem?
Regards,
Richard
they are given do not pass the the VIN check-sum (if such a think exists).
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 1: if posting/reading through Usenet, please send an appropriate
subscribe-nomail command to [EMAIL PROTECTED] so
to update
a record using MS-access and ODBC with a null boolean will result in failure.
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 1: if posting/reading through Usenet, please send an appropriate
subscribe-nomail command
sized like a medium to large and it fits me like a glove. But there is a plus
side to its sizing, I never need to iron out the wrinkles to give it that nice
pressed look. :o)
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 6: explain analyze
mind having a PG polo that has 3rd part vendor logos
on the sleeves if that would help make PG polo shirts available.
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 2: Don't 'kill -9' the postmaster
ON UPDATE CASCADE);
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 4: Have you searched our list archives?
http://archives.postgresql.org/
mailing list.
Also, why did you choose the ANSI driver over the Unicode driver?
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 1: if posting/reading through Usenet, please send an appropriate
subscribe-nomail command to [EMAIL
to be marked read only?
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 2: Don't 'kill -9' the postmaster
--- On Thu, 11/15/07, Richard Broersma Jr [EMAIL PROTECTED] wrote:
My desktop (acting as a db-server for my discipline's
group) has it power cycled this morning at 4:10
...
C:\Program
Files\PostgreSQL\8.2\bin2007-11-15 06:36:13
PANIC: could not open control file
global/pg_control
difficult but still
possible using lisp or vba.
Auto cad has prebuilt tools to extract/link data from blocks to any ODBC
compliant database. Of course, the holy grail would be to eliminate auto cad
altogether and then render drawings from the data stored in the database. :-)
Regards,
Richard Broersma
--- On Mon, 10/29/07, Ow Mun Heng [EMAIL PROTECTED] wrote:
(Raid1 = No Fault tolerance since 3 drives)
Raid1 with three drives will have fault tolerance. You will have three disks
with the same image. This is triple redundancy. This could greatly improve
select performance.
Having said
--- On Sun, 10/21/07, Adrian Klaver [EMAIL PROTECTED] wrote:
I have a column with data structured as follows.
32TT - 0002
32LT- 0004
32PT-0005
Is there a way of selecting all of the rows containing
LT in that column??
I have attempted variations of ' *LT* ' with
out success.
I
model?
If the nested set model is chosen, would having a table and index fill factor
of 50% be a good idea in this case if periodic updates were expected?
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 3: Have you checked our extensive
value.
a check constraint ought to do it
True, but how do I insure that one record's left does not equal another
record's right?
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 4: Have you searched our list archives
Is it possible to constraint both the LEFT and RIGHT fields of a record to use
the same index? I am looking for a way to ensure for all LEFTs and RIGHTs in a
table, that is it is impossible for any LEFT or RIGHT to have to same value.
---(end of
);
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 1: if posting/reading through Usenet, please send an appropriate
subscribe-nomail command to [EMAIL PROTECTED] so that your
message can get through to the mailing list cleanly
is of course empty -
except it's not clear to me what should happen for childless people ...
Thanks everyone that makes sense!
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 5: don't forget to increase your free space map settings
know of
non-html windows email clients that work well for this mailing list?
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 1: if posting/reading through Usenet, please send an appropriate
subscribe-nomail command to [EMAIL PROTECTED
.synsetid = T.synsetid
WHERE W.lemma = 'scramble'
AND R.linked = 1
AND R.pos='v'
ORDER BY lemma;
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 3: Have you checked our extensive FAQ?
http
OOPs!
--- Richard Broersma Jr [EMAIL PROTECTED] wrote:
--- John D. Burger [EMAIL PROTECTED] wrote:
My question is, should the planner have figured this out, and we're
just losing out because we're stuck in 7.4? Or is there some subtle
difference in semantics I'm missing? The select
this is impossible.
For this to work, you should be using an INSERT query to _ADD_ records to foo
that do not yet
exist.
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 9: In versions below 8.0, the planner will ignore your desire to
choose
--- John Smith [EMAIL PROTECTED] wrote:
what does this mean?
{postgres=arwdRxt/postgres,username=r/postgres}
This link describes each of the letters:
http://www.tldp.org/LDP/intro-linux/html/sect_03_04.html
Regards,
Richard Broersma Jr.
---(end of broadcast
is the
Hierarchical Nested
Set data model. Inserting/updating/deleting nodes and branches into the table
requires updating
the primary key of a lot of records.
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 9: In versions below 8.0
I thought I would give this question a second try.
--- Richard Broersma Jr [EMAIL PROTECTED] wrote:
A while back it was pointed out the that the Windows version of 8.2.3 had a
bug that prevented
auto-vacuum from working correctly.
http://archives.postgresql.org/pgsql-general/2007-04
to see if I notice a difference.
Ofcourse, maybe auto-vacuum does work but I have a configuration error some
where.
Thanks for the consideration!
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 1: if posting/reading through Usenet, please
with, here are the settings that I currently have in my
postgresql.conf for
auto-vacuum. I will post-back with any results whether I see auto-vacuum
working in 8.2.5 or not.
Thanks!
Regards,
Richard Broersma Jr
--- Richard Broersma Jr [EMAIL PROTECTED] wrote:
I will dis-able the hourly manual vacuum/analyze script that I implemented as
a work-around to
this problem to see if auto-vacuum is ever triggered.
it appears to be working fine in 8.2.5:
proj02u20411= begin transaction;
BEGIN
proj02u20411
time to sequentially
scan to find to
find the cross-reference table page location of records of interest. So the
net effect is that
larger indexes will make SELECT statement slower.
This is my understanding for tables indexes and fill factor. I hope it helps.
Regards,
Richard Broersma Jr
Not quite. Once a page has reached it's fill factor percentage full,
no more inserts will happen on that page, only updates. Also, I
think you have large/small backwards wrt fill factor. If you have a
fill factor of, say, 40% then once a page has reached 40% full no
more inserts
an implied index. Fill factor is applied to that
implied index.
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 2: Don't 'kill -9' the postmaster
--- Erik Jones [EMAIL PROTECTED] wrote:
Also, note that once we have HOT...
I am not sure what the acronym HOT stands for. Does it have something to do
with MVCC?
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 5: don't forget
-PARAMETERS
I found this:
B-trees use a default fillfactor of 90, but any value from 10 to 100 can be
selected.
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 9: In versions below 8.0, the planner will ignore your desire to
choose
,
Richard Broersma Jr.
---(end of broadcast)---
TIP 4: Have you searched our list archives?
http://archives.postgresql.org/
though-put from UPDATEs and INSERTs?
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 3: Have you checked our extensive FAQ?
http://www.postgresql.org/docs/faq
or
8.2.5. Does any know if it was?
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match
/static/sql-notify.html
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 5: don't forget to increase your free space map settings
();
= returns a SETOF of (int4 NULL, text NULL)
I don't know if this will work, but here is another idea:
SELECT movie_id, movie_name
FROM get_movies() AS ( int4 NOT NULL, text NOT NULL );
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 4
but it is a Postgresql-ism for functions return
types:
http://www.postgresql.org/docs/8.2/interactive/sql-select.html
notice this from-type listing for functions.
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 6: explain analyze is your friend
or end of the string?
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match
wonder why the EXPLAIN ANALYZE time id some much less that the
logged select
statement times?
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 5: don't forget to increase your free space map settings
to Refresh
the exported data
directly from excel using the build in functionality of excel.
http://pgfoundry.org/projects/psqlodbc/
http://www.sls.psi.ch/controls/help/tutorials/Excel_ODBC/index.html
Regards,
Richard Broersma Jr.
---(end of broadcast
.
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 3: Have you checked our extensive FAQ?
http://www.postgresql.org/docs/faq
+ [table_name]
to see additional table attributes
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match
in just going to take a
while. Hopefully
this isn't an operation that you will need to preform regularly.
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 6: explain analyze is your friend
the method
of implementing a materialized view.
http://www.jonathangardner.net/PostgreSQL/materialized_views/matviews.html
other useful docs like this one can be found here:
http://www.postgresql.org/docs/techdocs.2
Regards,
Richard Broersma Jr.
---(end of broadcast
[: last item on previous page :]
ORDER BY item_nbr
LIMIT 15;
This method was discuss on the list a couple of months ago.
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 6: explain analyze is your friend
, notice
that \timing and
explain analyze do not exactly agree on the results they produce.
IIRC, \time also counts its own overhead.
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 3: Have you checked our extensive FAQ?
http
BY col1
ORDER BY col1;
col1 |avg
--+
1 | 1.5000
2 | 3.5000
(2 rows)
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 4: Have you searched our list archives
. :-)
If you need to, you can append your own timestamp to the dump file if you need
it.
I rolled this functionality into a .bat file.
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 2: Don't 'kill -9' the postmaster
Broersma Jr.
---(end of broadcast)---
TIP 6: explain analyze is your friend
--- Joshua D. Drake [EMAIL PROTECTED] wrote:
Hello,
For those who were too square to be there,
For us squares, are there any pictures avaliable of this event?
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 9: In versions below
--- Bob Pawley [EMAIL PROTECTED] wrote:
I have developed a PostgreSQL database c/w a Delphi interface with which to
input data.
If so, are there any tools that may assist me in developing this graphic
interface?
This link seemed enteresting to me.
how triggers are
fired if there
is more than one trigger for a particular type (before, after) the insert,
update, delete
commands.
The triggers fire in alphbetical order.
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 2: Don't
,
Richard Broersma Jr.
---(end of broadcast)---
TIP 4: Have you searched our list archives?
http://archives.postgresql.org/
--- Osvaldo Rosario Kussama [EMAIL PROTECTED] wrote:
Try:
SELECT your_field ~ '.*[[:digit:]]{2}$';
This could be simplified a little. :o)
WHERE your_field ~ '\\d{2}$';
---(end of broadcast)---
TIP 9: In versions below 8.0, the planner will
utilization
of update triggers?
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 4: Have you searched our list archives?
http://archives.postgresql.org/
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