On Mon, Nov 19, 2012 at 08:31:10AM +0800, Craig Ringer wrote:
> On 11/19/2012 01:11 AM, Louis-David Mitterrand wrote:
> > On Sun, Nov 18, 2012 at 07:27:54PM +0800, Craig Ringer wrote:
> >> On 11/18/2012 12:19 AM, Louis-David Mitterrand wrote:
> >>> Hi,
> >>&g
On Sun, Nov 18, 2012 at 07:27:54PM +0800, Craig Ringer wrote:
> On 11/18/2012 12:19 AM, Louis-David Mitterrand wrote:
> > Hi,
> >
> > I'm planning to centralize all db maintenance jobs from a single
> > pl/pgsql function called by cron every 15 minutes (highest fre
Hi,
I'm planning to centralize all db maintenance jobs from a single
pl/pgsql function called by cron every 15 minutes (highest frequency
required by a list of jobs). In pseudo code:
CREATE or replace FUNCTION cron_jobs() RETURNS void LANGUAGE plpgsql AS $$
DECLARE
rec record;
BEGIN
/*
On Tue, Nov 23, 2010 at 04:19:18PM +0100, Louis-David Mitterrand wrote:
> Hi,
>
> On time series price data I'm trying to remove consecutive identical
> prices and keep only the latest. I tried:
>
> delete from price where id_price in (select t
On Tue, Nov 23, 2010 at 03:31:59PM -, Oliveiros d'Azevedo Cristina wrote:
> Salut, Louis-David,
>
> Can you please state the columns belonging to price table
> and give a concrete example?
> Say, data before and data after you want to do?
Hi Cristina,
Data before:
id_price | price
Hi,
On time series price data I'm trying to remove consecutive identical
prices and keep only the latest. I tried:
delete from price where id_price in (select t.id_price2 from (select
first_value(p.id_price) over w as id_price1,
nth_value(p.
On Mon, May 24, 2010 at 07:00:30PM +0200, Louis-David Mitterrand wrote:
> On Mon, May 24, 2010 at 02:38:39PM +, Tim Landscheidt wrote:
> > you use something simple like (untested):
> >
> > | UPDATE cabin_type
> > | SET id_cabin_type =
> > | CASE
> >
On Mon, May 24, 2010 at 02:38:39PM +, Tim Landscheidt wrote:
> Louis-David Mitterrand wrote:
>
> What does "are not properly updated" mean? Anyhow, why don't
Hi,
I did follow-up on my own post: the problem was elsewhere.
> you use something simple like (untested
On Mon, May 24, 2010 at 10:51:01AM +0200, Louis-David Mitterrand wrote:
> Hi,
>
> I have this function which swaps primary keys for cabin_types (so that
> id_cabin_type ordering reflects natural data ordering):
Actually this function works fine. My problem was elsewhere. Sorry for
ba
Hi,
I have this function which swaps primary keys for cabin_types (so that
id_cabin_type ordering reflects natural data ordering):
CREATE OR REPLACE FUNCTION swap_cabin_types(id1 integer, id2 integer)
RETURNS integer
AS $$
declare
tmp integer;
On Thu, May 13, 2010 at 11:36:53AM +0400, silly sad wrote:
> On 05/12/10 09:41, Louis-David Mitterrand wrote:
> >Hi,
> >
> >I have a large dataset (page 1 at http://www.cruisefish.net/stat.md) and
> >am in the process of developping a pager to let users l
On Wed, May 12, 2010 at 12:26:17PM -0400, Justin Graf wrote:
> oops typos
> On 5/12/2010 1:41 AM, Louis-David Mitterrand wrote:
> > Hi,
> >
> > I have a large dataset (page 1 at http://www.cruisefish.net/stat.md) and
> > am in the process of developping a page
Hi,
I have a large dataset (page 1 at http://www.cruisefish.net/stat.md) and
am in the process of developping a pager to let users leaf through it
(30K rows).
Ideally I'd like to know when requesting any 'page' of data where I am
within the dataset: how many pages are available each way, etc.
Of
On Wed, Apr 14, 2010 at 06:06:59PM +0200, Pavel Stehule wrote:
> I don't understand well. Why you don't use a function date_trunc(),
>
> select date_trunc('week', created), count(*)
> from price
> group by date_trunc('week', created)
Because if a price doesn't change for more than a week, then so
On Wed, Apr 14, 2010 at 08:46:13AM -0700, Richard Broersma wrote:
> On Wed, Apr 14, 2010 at 7:54 AM, Louis-David Mitterrand
> wrote:
>
> > Now, I'd like to make a graph of average prices per week, per
> > id_product. As some prices don't vary much, distribution wou
Hi,
I have times series data in a 'price' table:
price(id_price, price, id_product, created, modified)
Prices are polled daily and a new 'price' row is created only if the
price of id_product changes, else modified is updated to now().
Now, I'd like to make a graph of average prices per week, p
On Thu, Mar 25, 2010 at 08:27:27AM +0100, Pavel Stehule wrote:
> 2010/3/25 Louis-David Mitterrand :
> > On Sat, Mar 06, 2010 at 04:31:55PM -0500, Tom Lane wrote:
> >> Petru Ghita writes:
> >> > "..immediately replaced with the function value" doesn't
On Sat, Mar 06, 2010 at 04:31:55PM -0500, Tom Lane wrote:
> Petru Ghita writes:
> > "..immediately replaced with the function value" doesn't mean that the
> > results of a previously evaluated function for the same parameters are
> > stored and reused?
>
> No, it means what it says: the function
On Wed, Mar 24, 2010 at 05:29:46PM +0100, Andreas Kretschmer wrote:
> A. Kretschmer wrote:
>
> Well, and now i'm using 8.4 windowing-functions:
>
> test=*# select * from price order by price_id, d;
> price_id | price | d
> --+---+
> 1 |10 | 2010-03-12
>
On Wed, Mar 24, 2010 at 03:29:36PM +0100, A. Kretschmer wrote:
> In response to Louis-David Mitterrand :
> > Hi,
> >
> > I have time series data: price(id_price int, price int, created_on
> > timestamp)
> >
> > I'd like to select the latest price befo
Hi,
I have time series data: price(id_price int, price int, created_on timestamp)
I'd like to select the latest price before, say, 2010-03-10 and the
latest price after that date.
Using "group by" and self-joins I was able to build a (quite large :)
working query.
But I wonder if there is a cl
On Thu, Mar 04, 2010 at 08:53:10PM +, Greg Stark wrote:
> SELECT col FROM tab ORDER BY col DESC OFFSET 1 LIMIT 1
>
> In 8.4 OLAP window functions provide more standard and flexibility
> method but in this case it wouldn't perform as well:
>
> postgres=# select i from (select i, rank() over (o
Hi,
With builtin aggregates is it possible to return the value just before
max(col)?
Thanks,
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On Wed, Mar 03, 2010 at 10:29:44AM -0600, Little, Douglas wrote:
> Louis,
> Interesting discussion. Always fun to think about real world stuff.
Indeed.
> We have a similar problem for comparing hotel rooms.
> So the issue is that you aren't originating the data, just classifying it.
> I'd mov
On Wed, Mar 03, 2010 at 10:13:48AM -0600, Little, Douglas wrote:
> Hey Louis,
>
> Ship rooms are just like Hotel rooms. There are lots of ways to
> describe. But there needs to be some consistency between the
> classifiers for them to have any meaning.
>
> A junior suite should mean the same th
On Wed, Mar 03, 2010 at 04:05:43PM -, Oliveiros wrote:
>
> As your table names seem to imply, type and category are cabin's
> characteristics , not ship characteristics.
> Am I right?
Yes and no :)
- I'm scanning cruise line web sites with a spider to collect prices so
I'm building cabin_
On Wed, Mar 03, 2010 at 10:03:05AM -0600, Little, Douglas wrote:
> Hello,
>
> I would have designed as ship > cabin (PK of ship_id, Cabin_id)
> And a separate chain of cabin_type > cabin_category > cabin
Ah, now I'm having second thoughts about my schema ;)
> Type, and category are group classi
On Wed, Mar 03, 2010 at 07:29:22AM -0800, Richard Broersma wrote:
> On Wed, Mar 3, 2010 at 7:19 AM, Louis-David Mitterrand
> wrote:
>
> > CREATE TABLE cabin_type (
>
> > CREATE TABLE cabin_category (
>
> > CREATE TABLE cabin (
>
> I'm just cur
On Wed, Mar 03, 2010 at 07:14:29AM -0800, Richard Broersma wrote:
> On Wed, Mar 3, 2010 at 7:02 AM, Louis-David Mitterrand
> wrote:
>
>
> > What is the best solution? Adding an id_ship to 'cabin'? Or check'ing
> > with a join down to 'ship'?
Hi,
I've got this chain of tables:
ship --> (id_ship) --> cabin_type --> (id_cabin_type) --> cabin_category
--> (id_cabin_category) --> cabin
The 'cabin' table has (cabin_number, id_cabin_category ref. cabin_category)
How can I guarantee unicity of cabin_number per ship?
For now I adde
On Wed, Feb 24, 2010 at 02:09:09PM +0100, A. Kretschmer wrote:
> In response to Louis-David Mitterrand :
> > Hi,
> >
> > I'm trying the following query:
> >
> > select array_agg(t1.id) from table1 t1 join table2 t2 on (t2.id =
> > any(array_agg
Hi,
I'm trying the following query:
select array_agg(t1.id) from table1 t1 join table2 t2 on (t2.id =
any(array_agg)) group by t1.col1;
but I get this error: ERROR: column "array_agg" does not exist
I tried aliasing array_agg(t1.id) without success.
Thanks for any suggestions,
--
S
On Tue, Feb 16, 2010 at 09:38:19PM +, Tim Landscheidt wrote:
> Louis-David Mitterrand wrote:
>
> > Here is the basic schema:
>
> > -->id_ship>---
> > |
On Tue, Feb 16, 2010 at 03:33:23PM +, Oliveiros wrote:
> Louis-David,
>
> Please advice me,
Hi Oliveiros,
> if some cabin doesn't have a price i.e. it is not available, is there some
> way to tell
> which cruise it belongs to?
In fact a cabin belongs to a ship and CAN be associated to a 'cr
Here is the basic schema:
-->id_ship>---
||
[SHIP]->id_ship->[CABIN]->id_cabin->[PRICE]<-id_cruise<-[CRUISE]
It's a database of cruise prices.
Each 'price' object has a reference to 'cabin' an
Hi,
Here is my schema:
cruise_line -> ship(id_line) -> cruise_type(id_ship) -> cruise(id_cruise_type)
-> price(id_cruise, id_currency) <- currency (USD,GBP,EUR,CAD)
(a 'cruise' is a 'cruise_type' + a date)
I am trying to display a count of cruise's for each ship and each
currency even
On Fri, Feb 12, 2010 at 11:35:02AM -, Oliveiros C, wrote:
> My first guess is that
> NULL fails the condition on your WHERE clause,
> p.id_line = 1
>
> So your WHERE clause introduces an additional level of filtering
> that filters out the NULLs coming from the LEFT JOIN...
So, if I understan
Hi,
This query:
select c.id_currency,max(p.modified_on) from currency c left join
price_line p using (id_currency) where p.id_line=1 group by
c.id_currency;
doesn't list all c.id_currency's, only those with a price_line. However
this one does:
select c.id_currency,max(p.modified_on) from curren
On Tue, Feb 09, 2010 at 08:01:35AM -0700, Rob Sargent wrote:
> You can also invert this, making all the image owner share a common base
> table and then images are dependent on that base
>
> base (id, type) where type is an enumeration or some such
> person (id, name, etc) where id is FK to base i
On Tue, Feb 09, 2010 at 11:59:14AM +, Richard Huxton wrote:
> On 09/02/10 07:49, Louis-David Mitterrand wrote:
> >Hello,
> >
> >In my database I have different object types (person, location, event,
> >etc.) all of which can have several images attached.
> >
&g
Hello,
In my database I have different object types (person, location, event,
etc.) all of which can have several images attached.
What is the best way to manage a single 'image' table with relationships
to (potentially) many different object types while keeping referrential
integrity (foreign ke
On Tue, Sep 22, 2009 at 11:56:54AM +0200, Pavel Stehule wrote:
>
> there are more ways - depends on what you wont.
>
> one way is
>
> SELECT *
>FROM price
> WHERE (id_product, date) = (SELECT id_product, max(date)
>FROM price
Hi,
I have a simple table
price(id_product, price, date)
which records price changes for each id_product. Each time a price
changes a new tuple is created.
What is the best way to select only the latest price of each id_product?
Thanks,
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Hi,
I'd like to find a way to archive versions of my data in an elegant and
extensible way.
When a user modifies certain entries I'd like the database to keep the
previous versions (or a limited, definable number of versions).
Wiki-style.
Would that be a good use of postgres' arrays?
So I'm lo
On Sun, Dec 14, 2008 at 02:51:24PM -0800, Michal Szymanski wrote:
> On 14 Gru, 20:22, vindex+lists-pgsql-...@apartia.org (Louis-David
> Mitterrand) wrote:
> >
> > I have an 'event' table and an 'event_date' table pointing to it
> > containing
Hi,
I have an 'event' table and an 'event_date' table pointing to it
containing (potentially) several event dates (start and (optionnaly)
end) for the event in the past, present and future.
I'm trying to build a query to select the most "relevant" date:
'current' or 'next' or 'last' (by order of
On Sat, Dec 06, 2008 at 06:24:25PM +, John Lister wrote:
> >(still curious about the "must be used in an aggregate function" error
> >though... because I do use it in an aggregate)
>
> You're original query grouped on the person id and name, therefore you
> can only return (and order by) thes
On Sat, Dec 06, 2008 at 06:26:06PM +0100, Andreas Kretschmer wrote:
> Louis-David Mitterrand <[EMAIL PROTECTED]> schrieb:
> >
> > But if I append this
> >
> > order by pt.type_fr = 'comédien';
> >
> > I get this error:
> >
&g
Hi,
This query:
select p.id_person, person_name(p), array_accum(distinct pt.type_fr)
from person p
left join person_to_event x using (id_person)
left join person_type pt using (id_person_type)
where person_name(p) ilike '%wil
On Tue, Oct 07, 2008 at 05:16:39PM -0700, Steve Midgley wrote:
>
> I think the relationship tables method works pretty well but I have
> another suggestion. You could store the Foreign table name within image
> table as well as the Foreign key.
>
> |id|image_url|f_table|f_key
> |1 |url..|pe
On Mon, Oct 06, 2008 at 09:25:09AM -0400, Dan McFadyen wrote:
> Hello,
>
> Simplest way I can think of is create 3 relation tables, a person/image
> table, location/image table and event/image table.
>
> Each is just made up for 2 foreign keys to the first ID and image ID,
> using both as the PK
Hi,
Say you have several objects (tables): person, location, event, etc. all
of which can have several images attached.
What is the best way to manage relations between a single 'image' table
and these different objects?
For now each 'image' row has pointers to id_person, id_location,
id_event,
the id of the event you wanna exclude
> join event_type et
> ON e.id_event_type = et.id_event_type
> where et.type_fr='théâtre'
> GROUP BY pt.type_fr
> HAVING SUM(e2.id_event) IS NULL;
>
> - Original Message - From: "Louis-David Mitterrand"
> <[EMAI
On Mon, Sep 22, 2008 at 09:39:08AM -0700, Mark Roberts wrote:
>
> Taking your second email into account, I came up with:
>
> select distinct pt.type_fr
> from person_to_event pte
> inner join person_type using (id_person_type)
> where id_person_type in (
> select id_person_type
> from
On Mon, Sep 22, 2008 at 04:34:14PM +0200, Louis-David Mitterrand wrote:
> Hi,
>
> I've got five related tables:
>
> - person_type:
> id_person_type integer
> type_fr text
>
> - person:
> id_person integer
Hi,
I've got five related tables:
- person_type:
id_person_type integer
type_fr text
- person:
id_person integer
...
- person_to_event:
id_person -> person
id_person_type -> person_type (e.g: actor, di
On Thu, Jun 26, 2008 at 05:06:14PM +0200, Marc Mamin wrote:
>
> Hello,
Hi Marc,
> I guess that the time offsets (now-21 and now-28) are evaluated each
> time the corresponding condition is met.
Excellent suggestion, this makes the query ~ 15% faster. Every bit
counts.
> It may be faster to put
Hello,
I'm looking for a more efficient way of dynamically categorizing some
events. The following view definition looks into each event's latest
event_date object (a theater play can have several, a book only one) to
tell whether the event is current, past or future:
SELECT s.id_event_su
On Wed, Nov 07, 2007 at 10:35:08AM -0500, Tom Lane wrote:
> "Amitanand Chikorde" <[EMAIL PROTECTED]> writes:
> > I want to convert MAX(mydate) from myTable to Epoch.
>
> Do you mean
> SELECT EXTRACT(EPOCH FROM MAX(mydate)) FROM myTable
Is using casts for the same purpose deprecated?
On Sun, Dec 23, 2007 at 10:27:09PM +0100, Pavel Stehule wrote:
> On 23/12/2007, Louis-David Mitterrand
> <[EMAIL PROTECTED]> wrote:
> > Hi,
> >
> > is there a way to return a Pg array as a list of single-column row
> > values?
> >
> > I am tryin
On Sun, Dec 23, 2007 at 10:19:26PM +0100, Pavel Stehule wrote:
> Hello
>
> try
>
> create or replace function unpack(anyarray)
> returns setof anyelement as $$
> select $1[i]
> from generate_series(array_lower($1,1), array_upper($1,1)) g(i);
> $$ language sql;
>
> postgres=# select * from
Hi,
is there a way to return a Pg array as a list of single-column row
values?
I am trying to circumvent DBI's lack of support for native database
arrays and return the list of values from an ENUM as a perl array.
Thanks,
---(end of broadcast)--
On Mon, Dec 17, 2007 at 12:27:34PM -0500, Rodrigo De León wrote:
> On 12/17/07, Louis-David Mitterrand <[EMAIL PROTECTED]> wrote:
> > I've got this ugly case statement that I'd like to hide in a function:
>
> Why don't you hide the entire query in a VIEW?
Hi,
I've got this ugly case statement that I'd like to hide in a function:
select
...
case when
d.start_date <= CURRENT_DATE and
case when w.show_type in ('cinéma','livre')
then d.start_date >= CURRENT_DATE - 21
On Wed, Nov 21, 2007 at 09:14:14AM +0100, Bart Degryse wrote:
> I would do something like this (not tested, but conceptually working):
>
> CREATE or replace FUNCTION sanitize_text(webtext IN text, cleantext OUT text)
> AS
> $body$
> BEGIN
> cleantext = translate(webtext, E'\x92\x96', '''-');
> c
On Tue, Nov 20, 2007 at 11:56:02AM -0500, Tom Lane wrote:
> Louis-David Mitterrand <[EMAIL PROTECTED]> writes:
> > I'd like to use it on other tables an columns but how can the column
> > name be dynamic inside the procedure.
>
> It can't --- plpgsql has no
On Wed, Nov 21, 2007 at 09:14:14AM +0100, Bart Degryse wrote:
> I would do something like this (not tested, but conceptually working):
Hello,
> BEGIN
> if old.story is not null and new.story != old.story then
> new.story = sanitize_text(new.story);
> end if;
> --checks on other field can be inc
Hi,
I've got this trigger to clean up text entered in web forms:
CREATE or replace FUNCTION sanitize_text() RETURNS "trigger"
AS $$
declare
begin
if old.story is not null and new.story != old.story
then
Hi,
I'm trying to protect created_by and created_on columns from accidental
update. Most of my tables inherit from a 'source' table that has those
columns, so I was thinking of creating a rule or trigger that does
nothing on update to these columns. But apparently rules and triggers
don't appl
On Tue, Jul 24, 2007 at 03:10:44PM +0100, Gregory Stark wrote:
> "Louis-David Mitterrand" <[EMAIL PROTECTED]> writes:
>
> > Can I use a another column to store the type of the id_subject (ie: the
> > tabled it belongs to) ? Then I would be able to query that
Hello,
In my forum app a new post can be related to several types of objects:
person, location, event, simple text subject, etc. so in my 'forum'
table I plan to add an id_subject column which can contain a reference
to any number of different tables (location, person, etc.). What I need
to kn
On Thu, May 10, 2007 at 09:49:32AM +1000, Robert Edwards wrote:
>
> Hi Louis-David,
>
> I also have written a forum application using PostgreSQL.
>
> My schema has a "threadid" for each posting, which is actually also the
> "messageid" of the first posting in the thread, but that is irrelevant.
On Wed, May 09, 2007 at 04:30:21PM +0200, Louis-David Mitterrand wrote:
> On Wed, May 09, 2007 at 02:55:20PM +0200, Louis-David Mitterrand wrote:
> > Hi,
> >
> > To build a threaded forum application I came up the following schema:
> >
> > forum
> >
On Wed, May 09, 2007 at 02:55:20PM +0200, Louis-David Mitterrand wrote:
> Hi,
>
> To build a threaded forum application I came up the following schema:
>
> forum
> --
> id_forum | integer| not null default nextval('forum_id_forum_seq'::regclass)
> id_p
On Wed, May 09, 2007 at 02:24:22PM +0100, Gregory Stark wrote:
> "Louis-David Mitterrand" <[EMAIL PROTECTED]> writes:
>
> > Each message a unique id_forum and an id_parent pointing to the replied
> > post (empty if first post).
> >
> > How can I buil
Hi,
To build a threaded forum application I came up the following schema:
forum
--
id_forum | integer| not null default nextval('forum_id_forum_seq'::regclass)
id_parent| integer|
subject | text | not null
message | text |
Each message a unique id_forum and an id_parent pointing to
Hello,
I've got a table that looks basically like:
id_show | serial
show_name | text
show_type | text
created_on | timestamp without time zone
When looking at a row with an id_show of value n, I'd like to have an
On Fri, Feb 23, 2007 at 01:31:14PM -0500, Joe wrote:
> Hello Louis-David,
>
> On Fri, 2007-02-23 at 17:27 +0100, Louis-David Mitterrand wrote:
> > I'm considering implementing a search box on my review web site
> > http://lesculturelles.net and am looking for a simple
On Fri, Feb 23, 2007 at 10:01:22AM -0800, chester c young wrote:
> > I'm considering implementing a search box on my review web site
> > http://lesculturelles.net and am looking for a simple way to match
> > entered words against several columns on related tables:
> > show.show_name, story.title,
Hello,
I'm considering implementing a search box on my review web site
http://lesculturelles.net and am looking for a simple way to match
entered words against several columns on related tables: show.show_name,
story.title, person.firtname, person.lastname, etc.
What is the most elegant way to
On Sat, Feb 17, 2007 at 07:21:40PM +0100, M.P.Dankoor wrote:
> Louis-David Mitterrand wrote:
> >
> I thought of another solution, actually it's of those top n query tricks
> that I picked up somewhere, can't remember
> where.
> Assuming that your table is ca
Hello,
I've got a table of shows with different types (movie, theater,
ballet,etc.) and I am looking for a select that can return the 10 last
entered shows AND at most 2 of each type. Is that possible in one query?
The table looks basically like:
created_on | timestamp without tim
Hello,
I've got the following tables:
person:
- id_person
- firstname
- lastname
- type
person_to_type:
- id_person references person
- type references person_type;
person_type:
- type
"person_type" contains differents caracteristics for a person (actor,
director, author, etc.) who can have s
On Wed, Mar 07, 2001 at 03:40:44PM -0500, Roland Roberts wrote:
> > "bk" == Boulat Khakimov <[EMAIL PROTECTED]> writes:
>
> bk> How do I grant permissions on everything in the selected
> bk> databes?
>
> bk> GRANT doesnt take as on object database name nor does it
> bk> accept
On Wed, Mar 21, 2001 at 10:49:41AM -0500, Bruce Momjian wrote:
> > Note also that it's a mailing list cultural thing: many lists operate
> > in a 'post only to the list' mode. Those of us on the pgsql lists do the
> > 'list and person' thing, in response to direct questions, for the reasons
> > Br
On Thu, Dec 28, 2000 at 09:36:57AM -0500, Ron Peterson wrote:
> Tulio Oliveira wrote:
> >
> > I appreciate any "C" Function complete samples, including de command
> > line for
> > the compiler.
>
> I've attached a generic GNU make snippet for compiling .so files.
> Adjust to suite your tastes.
On Tue, Oct 24, 2000 at 06:51:03PM -0400, Tom Lane wrote:
> Louis-David Mitterrand <[EMAIL PROTECTED]> writes:
> > Is there a way to know which columns are being UPDATEd or INSERTEd from
> > inside a trigger, either in C or pl/pgsql?
>
> Huh? An INSERT always inserts
Hello,
Is there a way to know which columns are being UPDATEd or INSERTEd from
inside a trigger, either in C or pl/pgsql?
Thanks in advance,
--
Louis-David Mitterrand - [EMAIL PROTECTED] - http://www.apartia.org
If at first you don't succeed, redefine success.
---
> 15:05:21
> (1 row)
By the way, is it normal that the "day" word doesn't appear in the interval?
auction=# select interval(now()::abstime::int4);
interval
----
30 years 9 mons 3 15:42:09
(1 row)
--
Louis-David Mitterra
On Wed, Sep 20, 2000 at 09:20:25AM -0700, Josh Berkus wrote:
> > At 15:23 20/09/00 +0200, Louis-David Mitterrand wrote:
> > >
> > >ERROR: parser: parse error at or near "order"
> > >
> > >Aren't ORDER BY clauses allowed in subselects?
&g
ROR: replace_vars_with_subplan_refs: variable not in subplan target list
Thanks,
--
Louis-David Mitterrand - [EMAIL PROTECTED] - http://www.apartia.org
Marijuana is nature's way of saying, "Hi!".
ot;order"
Aren't ORDER BY clauses allowed in subselects?
--
Louis-David Mitterrand - [EMAIL PROTECTED] - http://www.apartia.org
Black holes are where God divided by zero.
ice;
END LOOP;
RETURN i;
Thanks for your input,
--
Louis-David Mitterrand - [EMAIL PROTECTED] - http://www.apartia.org
"Faith strikes me as intellectual laziness." -- Robert A. Heinlein
as it demonstrates that (as in perl) there is sometimes
more than one way to do it. Your solution works fine, and along the way
I learned to use temporary tables.
Thanks a lot for your input, cheers,
--
Louis-David Mitterrand - [EMAIL PROTECTED] - http://www.apartia.org
How's my posting? Call 1-800-DEV-NULL
=
b.person_id ;
sum
-
52
(1 row)
But this is wrong because it sums all quantities. I don't know how to
apply a valid WHERE clause in that case.
Thanks in advance for any help, cheers,
--
Louis-David Mitterrand - [EMAIL PROTECTED] - http://www.apartia.org
Hello,
Is there a way (outside of RULEs and TRIGGERs) to make a field
read-only once it is INSERTed or assigned its default value? I'm
thinking, for example, of the "created" column that I add to most
tables, holding the row's creation timestamp.
Thanks in advance,
--
Lo
for a "standard" way of doing this if such a thing
exists.
TIA
--
Louis-David Mitterrand - [EMAIL PROTECTED] - http://www.apartia.fr
"For a list of the ways which technology has failed to improve our
quality of life, press 3."
then if you
omit the clause from the outer select you risk having a false match if
two records have the same stopdate:
SELECT title,login,stopdate
FROM auction
WHERE stopdate = (SELECT max(stopdate) FROM auction WHERE login LIKE 'm%');
> Tom's solution has the drawback, tha
sing:
SELECT title,stopdate FROM auction ORDER BY stopdate LIMIT 1;
which seems the best solution (I was a bit concerned about performance,
but then again the max() aggregate does a scan of all rows as well).
Cheers,
--
Louis-David Mitterrand - [EMAIL PROTECTED] - http://www.apartia.fr
This is Linux Country. On a quiet night you can hear Windows NT reboot.
sdfsdfsdfsdf | 2001-04-10 15:00:00+02
(3 rows)
But the problem is that I now get three rows when I only want the max()
item.
How should I do it?
Thanks in advance,
--
Louis-David Mitterrand - [EMAIL PROTECTED] - http://www.apartia.fr
"Logiciels libres : nourris au code source sans f
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