On Wed, 2006-08-02 at 09:19 -0400, Tom Lane wrote:
> "Markus Bertheau" <[EMAIL PROTECTED]> writes:
> > I basically want to change a boolean column to char. The boolean
> > column has a default of true. The char column should have 'f' for
> > false and 't' for true. I think that an SQL statement lik
On Fri, 2006-06-30 at 18:41 -0700, Richard Broersma Jr wrote:
> > > CHECK ( 1 = ALL ( SELECT COUNT(STATUS)
> > > FROM BADGES
> > > WHERE STATUS = 'A'
> > > GROUP BY EMPNO))
> >
> > From t
On Fri, 2006-06-16 at 08:27 -0400, John DeSoi wrote:
> On Jun 15, 2006, at 11:49 AM, chester c young wrote:
>
> > in PHP for example, where there are multiple sessions and which you
> > get is random:
> >
> > how do you know if the session you're in has prepared a particular
> > statement?
> >
On Thu, 2006-06-15 at 13:59 -0700, [EMAIL PROTECTED] wrote:
> i frequently join certain tables together in various
> tables.
> is it a good practice to leave this included in the
> queries, as is, or should i factor it out somehow? if
> i should factor it, how do i do so?
Future proofing selects
On Tue, 2006-06-13 at 15:30 -0500, Aaron Bono wrote:
> In another post on a different topic, Rod Taylor said the following:
>
> "A\tcat in the\nhat" might be stored as ARRAY['A', 'cat', 'in', 'the',
> 'hat'].
>
On Mon, 2006-06-12 at 21:58 -0500, Aaron Bono wrote:
> I agree with Tom. Personally I cannot think of a time I would use an
> array column over a child table. Maybe someone can enlighten me on
> when an array column would be a good choice.
Arrays are a good choice when the data comes naturally s
On Thu, 2006-06-01 at 14:13 -0400, Yasir Malik wrote:
> > What I would like to do is simply get the last date_sent and it's
> > status for every broadcast. I can't do a GROUP BY because I can't put
> > an aggregate on the status column.
> >
> > SELECT MAX(date_sent), status
> > FROM broadcast_hist
> So I'm designing a table and I'm looking for an appropriate key. The
> natural key is a string from a few characters up to a maximum of
> perhaps 100. Joe gets quite fierce about avoiding the use of a serial
> id column as a key. The string is unique in the table and fits the
> criteria for a key
On Fri, 2006-03-24 at 16:20 -0500, Tom Lane wrote:
> Rod Taylor <[EMAIL PROTECTED]> writes:
> > The reason for the subselect is to prevent multiple calculations of
> > individual column aggregates. I believe it *may* be calculated multiple
> > times otherwise t
On Fri, 2006-03-24 at 15:19 -0500, Amos Hayes wrote:
> Hello. I've recently begun to use PostgreSQL in earnest (working with
> data as opposed to just having clever applications tuck it away in
> there) and have hit a wall with something.
>
> I'm trying to build a query that among other things
On Mon, 2006-03-20 at 17:53 +0300, Eugene E. wrote:
> I wrote:
>
> >> the problem is: you'll get this four byte sequence '\000' _instead_
> >> of NUL-byte anyway.
>
> You wrote:
>
> > Your client library should take care of escaping and de-escaping.
>
> We both agree as you see.
>
> Then i
On Mon, 2006-03-13 at 10:46 -0400, Alvaro Herrera wrote:
> Rod Taylor wrote:
>
> > By allowing the user a where clause you grant them select privileges.
> > You will find that delete works the same way.
> >
> > This is one of those times when per column permiss
On Mon, 2006-03-13 at 12:51 +0300, Eugene E. wrote:
> Hi all
> the serious problem with permissions is encountered
>
> NOTE: the following example is really useful but there is no room to
> describe it's use.
>
>
> db=# CREATE USER u;
> db=# CREATE TABLE t (i int, a text);
> db=# REVOKE all ON
> I'm experimenting with a set of triggers to automagically maintain
> ltrees-organized tables. I almost have it working, except for a pesky
> problem with re-ordering groups.
> Currently I'm doing this by only cascade-updating the row adjacent to
the
> one I'm moving. However, this is resul
> Sequential despite the indices? Or is this because the tables of my test
> DB are virtually empty?
This is it. PostgreSQL changes strategies with data load. Performance
testing must be done on an approximation of the real data (both values
and size).
--
---(end of br
On Mon, 2005-11-28 at 14:22 -0600, Announce wrote:
> Lets say I have the following tables.
>
> CREATE TABLE animals(id primary key, name varchar, type varchar);
> CREATE TABLE dogs (breed varchar)INHERITS (animals);
> CREATE TABLE birds (bool hasFeathers) INHERITS (animals);
r=# alter
On Tue, 2005-11-22 at 16:24 +0100, Joost Kraaijeveld wrote:
> Hi,
>
> Is there a way to create a foreign key to 2 tables: e.g. a bankaccount
> table that has a column "owner", that must point to a record in either
> the customer or the supplier table?
No. What you need is an owner table that cust
On Thu, 2005-11-10 at 11:21 -0700, Michael Fuhr wrote:
> On Thu, Nov 10, 2005 at 01:11:27PM -0500, Rod Taylor wrote:
> > rbt=# select cast(now() - date_trunc('day', now()) as time);
> > time
> > -
> > 13:10:42.495579
> > (1 ro
On Thu, 2005-11-10 at 09:03 -0600, Judith Altamirano Figueroa wrote:
> Hello everybody!!!, I'd like to know if there another way to get the
> time from a timestamp type, because in earliest versions I just get
> the time like time(fecha) and now this returns an error, thanks in
> advanced!!!
r
On Wed, 2005-08-24 at 15:46 +0200, Josep Sanmartí wrote:
> Hello,
> I have a 'big' problem:
> I have the following table users(name, start_time, end_time), a new row
> is set whenever a user logs into a server. I want to know how many
> users have logged in EVERYDAY between 2 different dates. Th
On Fri, 2005-07-08 at 17:34 +0200, Dawid Kuroczko wrote:
> On 7/8/05, Rod Taylor <[EMAIL PROTECTED]> wrote:
> > Create 2 sequences, one for counting tuple additions and one for
> > counting tuple deletions.
> >
> > When you INSERT a tuple, bump the
> So, leave COUNT(*) alone. But it would be very handy to have a
> way to get an approximate table size that is more accurate than is
> provided by a pg_class.reltuples that is only updated on vacuums.
Create 2 sequences, one for counting tuple additions and one for
counting tuple deletions.
Whe
On Wed, 2005-06-29 at 10:21 -0300, Martín Marqués wrote:
> El Mié 29 Jun 2005 09:40, KÖPFERL Robert escribió:
> >
> > |
> > |I personally think that the ENUM data type is for databases
> > |that are not well
> > |designed. So, if you see the need for ENUM, that means you
> > |need to re-think
On Thu, 2005-06-23 at 22:27 +0200, Markus Bertheau wrote:
> Dnia 23-06-2005, czw o godzinie 16:19 -0400, Rod Taylor napisał(a):
>
> > The data types are different, as one has the timestamp to (6) decimal
> > places after seconds.
>
> That's strange. I explicitly spec
On Thu, 2005-06-23 at 22:03 +0200, Markus Bertheau wrote:
> Hi,
>
> it seems to me that the following should work but it fails:
>
> CREATE VIEW co AS SELECT LOCALTIMESTAMP::TIMESTAMP AS ov WHERE FALSE;
> CREATE TABLE link (ov TIMESTAMP);
> CREATE OR REPLACE VIEW co AS SELECT ov FROM link;
The da
> Is there any elegent query you folks can think of that combines the
> two so I can one query that has alpha sorting on alpha categories and
> numeric sorting on numeric values that are in the same column??
select * from r order by (case when col ~ '^[0-9]+$' THEN lpad(col, 10,
'0') else col end)
On Wed, 2005-04-13 at 18:28 +0100, Matt Fulford wrote:
> I'm trying to write a query to return the number of different customers
> called on a single day. The database has a table called 'user', a table
> called 'caller_session' which references a 'user' record, and a table called
> 'call' whic
On Tue, 2005-04-12 at 23:08 -0700, Bill Lawrence wrote:
> Thanks,
>
> Unfortunately, I think that solution requires the distance calculation to be
> executed twice for each record in the table. There are ~70K records in the
> table. Is the postgres query optimizer smart enough to only perform the
> To alter table column from varchar(32) to date. "Alter table" command
> does not seem to work:
>
> alter table test alter column col type date ;
> ERROR: column "col1" cannot be cast to type "date"
Alter table will not automatically throw away information. That is, in
cases where it believes
> > select * from mytable where somecondition AND uniquecol>?
> > ORDER by uniquecol limit 50 OFFSET 50;
>
> > where the ? is placeholder for last value returned by last query.
>
> Uh, you don't want the OFFSET there do you? But otherwise, yeah,
> this is a popular solutio
On Mon, 2005-03-14 at 10:02 +0100, PFC wrote:
> If you want to add a SERIAL field to an existing table, create a
> sequence
> and then create an integer field with default nextval(seq) and postgres
> will fill it automatically. The order in which it will fill it is not
> guaranteed tho
On Sat, 2004-12-11 at 07:47 -0800, Stephan Szabo wrote:
> On Sat, 11 Dec 2004, Ian Barwick wrote:
>
> > (Oddly enough, putting the NULL in the CHECK constraint seems
> > to make the constraint worthless:
> > test=> create table consttest (field varchar(2) check (field in
> > (null, 'a','b','c')))
On Mon, 2004-11-22 at 15:09 +0100, Jerome Alet wrote:
> Hi,
>
> On Mon, Nov 22, 2004 at 08:54:20AM -0500, Rod Taylor wrote:
> > On Mon, 2004-11-22 at 19:11 +0530, sreejith s wrote:
> > > Hello friends I have a doubt,
> > > Is it possible to insert image
On Mon, 2004-11-22 at 19:11 +0530, sreejith s wrote:
> Hello friends I have a doubt,
> Is it possible to insert images into a postgres db. What is its
> datatype. Is its possible to insert jpeg images. or v have to store
> the path into the db. Pls reply. its urgent.
Use bytea for a datatype. Post
On Tue, 2004-11-16 at 11:29 +, Gary Stainburn wrote:
>
> How would I go about creating a view to show a) the number of photos
> in
> a gallery and b) the timestamp of the most recent addition for a
> gallery, so that it interrogates all sub-galleries?
There isn't a very simple answer to tha
On Wed, 2004-10-20 at 08:50, Philippe Lang wrote:
> Hello,
>
> Is it possible to reuse a previously calculated column in a following
> column, like:
SELECT col1
, col2
, col2 * 0.75 AS col3
FROM (SELECT foo.val1 AS col1
, long_calculation(foo.val1) AS col2
FROM
On Mon, 2004-09-20 at 12:19, T E Schmitz wrote:
> I figured it eventually. (The only thing I don't know is where to put
> the ORDER BY.)
Try this:
SELECT brand_name, model_name
FROM (SELECT ... INTERSECT SELECT ...) AS t
ORDER BY ...
---
On Wed, 2004-08-18 at 12:27, Jan Wieck wrote:
> On 8/18/2004 12:18 PM, Tom Lane wrote:
>
> > Richard Huxton <[EMAIL PROTECTED]> writes:
> >> * Allow multiple unique constraints to share an index where one is a
> >> superset of the others' columns.
> >
> >> That way you can mark it unique without
> However, Bruce, this should be on the TODO list:
>
> * Allow foreign key to reference a superset of the columns
>covered by a unique constraint on the referenced table.
It would probably be more beneficial to be able to create a unique
constraint without requiring the fields be ind
> > faster than ones sent through the lists. It is also possible that the direct
> > replies might be handled differently by the recipient (e.g. a filter may put
> > them in different folders).
>
> This is very true. In fact, I get mildly annoyed when people *don't*
> include the direct reply to
Depending on the size of your structures, something like the below may
be significantly faster than the subselect alternative, and more
reliable than the ctid alternative.
CREATE TYPE result_info AS (a integer, b integer, c integer, d integer);
CREATE OR REPLACE FUNCTION parallelselect() RETURNS
> Is this way of handling exceptions possible in postgres ?
> If so, what is the normal way to handle this exceptions, from a
> plpgsql/trigger(rule??) perspective ?
8.0 should allow you to do this. 7.4 you need to perform your own checks
and catch whether they succeed or fail.
On Fri, 2004-08-06 at 11:29, Gordon Ross wrote:
> Is it possible to make a column case insensitive, without having to pepper your
> SELECTs with lots of lower() function calls (and forgetting to do it at times !)
You could make yourself a set returning function to do this job -- but
that is proba
> All three of these implementation issues are, at least in theory,
> surmountable. For example, Sybase overcame problems (1) and (3) by creating
> an automated, system-controlled hash key based on the table's real key. This
> was a solution endorsed by E.F. Codd in the mid-90's when he came
Which version of PostgreSQL are you using?
select version();
> On Tue, 20 Jul 2004 22:39:38 -0400, Rod Taylor <[EMAIL PROTECTED]> wrote:
> > On Tue, 2004-07-20 at 20:55, azah azah wrote:
> > > Hi,
> > > I want convert from mysql to postresql,
> &
On Tue, 2004-07-20 at 20:55, azah azah wrote:
> Hi,
> I want convert from mysql to postresql,
> in mysql, query to database using the code as below:
>
> date_format(submittime, "%W %M %e, %Y - %r")
to_char(submittime, 'format string')
http://www.postgresql.org/docs/7.4/static/functions-formattin
Have you run ANALYZE recently?
Please send back EXPLAIN ANALYZE for the below query.
> EXPLAIN from DB 2 (doesn't come back):
>QUERY PLAN
>
On Tue, 2004-07-13 at 13:42, SZŰCS Gábor wrote:
> Dear Rod,
>
> Thanks. It'll be a pain to have two versions between the prod and devel
> servers, but I'll forward this info to the chief.
You can make this part easier on yourself.
Dump the structure from production and migrate it to devel (fix t
> Checked, and So do you say, this problem persists in dbs dumped from 7.4 to
> 7.4 too? i.e. upgrading to 7.4 (which we tested for quite some time now)
> won't help?
There may have been some minor fiddling to make it easier, but I
wouldn't call it fixed by any means.
> trying dump confirmed thi
On Mon, 2004-07-12 at 08:29, SZŰCS Gábor wrote:
> Dear Fellow Countymen,
>
> I fear none of your answers are acceptable for me. Also, from Csaba's
> answer, this sounds to me more like a bug in pg_dump v7.3.
It is a bug (or a missing feature) that should be solved with v7.5 for
restoring to 7.5 o
On Wed, 2004-06-30 at 18:54, Garth Thompson wrote:
> I am in the process of migrating the databases for an application from mysql
> to postgres. The application is uses several different databases. From
> what I have read, postgres still does not support queries across multiple
> databases. If t
On Tue, 2004-06-15 at 03:05, Andrei Bintintan wrote:
> "Is it safe to use "select max(table1_id) from table1" after the insert?"
>
> Yes it is safe, but ONLY if you use it inside a transaction.(BEGIN/COMMIT).
No, this is not safe outside of the serializable isolation.
rbt=# begin;
BEGIN
rbt=# se
> Ideally, I'd like to figure out a single SQL query that can be run
> afterwards to clean up the dsply_order to make sure that each number occurs
> only one time and that there are no gaps.
Well... by far the easiest way to approach this is not to clean up the
gaps. Removing gaps will only make t
On Tue, 2004-05-04 at 09:32, patkins wrote:
> All,
>
> I just upgraded to the latest version from 7.2.x and now a procedure is failing.
>
> Please tell me what I'm doing wrong!
Please include the actual error message produced. That said, I'm getting
an interesting error. It appears as if the int
On Thu, 2004-04-29 at 13:37, Marco Lazzeri wrote:
> Hi all.
>
> I have to check if a value is in an array.
>
> I've got a date array in a table and I would like to perform queries
> like:
>
> SELECT * FROM table WHERE date IN dates_array;
If you're using 7.4 or later, try:
SELECT * FRO
On Wed, 2004-04-21 at 11:00, francescosaf wrote:
> hi
>
> I have two tables:
Please send results of EXPLAIN ANALYZE for the query in question.
Thanks
---(end of broadcast)---
TIP 3: if posting/reading through Usenet, please send an appropriate
On Thu, 2004-04-22 at 10:11, Peter Eisentraut wrote:
> Am Donnerstag, 22. April 2004 15:58 schrieb Rod Taylor:
> > > make install-all-headers
> > >
> > > It's explained in the installation instructions.
> >
> > That doesn't happen on most
On Thu, 2004-04-22 at 01:18, Peter Eisentraut wrote:
> Kemin Zhou wrote:
> > IN chapter 33 Extending SQL
> > 33.7.5 Writing Code
> > when run pg_config --includedir-server
> > I got /usr/local/pgsql/include/server but my machine does have this
> > directory
>
> make install-all-headers
>
> It's
> Can anyone tell me why this SQL statement is not
> matching with the row from the table below? I think
> I'm going mad!
Indeed. The row is NOT in that range.
1082377320 is > 1082375100 not <= it
---(end of broadcast)---
TIP 3: if posting/reading
On Fri, 2004-04-09 at 18:43, Greg Stark wrote:
> Josh Berkus <[EMAIL PROTECTED]> writes:
>
> > Rod,
> >
> > > Something along the lines of the below would accomplish what you want
> > > according to spec. ROW_NUMBER() is a spec defined function. (6.10 of
> > > SQL200N)
> >
> > Great leaping litt
On Thu, 2004-04-08 at 19:33, Greg Stark wrote:
> Jeff Boes <[EMAIL PROTECTED]> writes:
>
> > I headed off in the direction of groups of SELECTs and UNIONs, and quit when I
> > got to something like four levels of "SELECT ... AS FOO" ...
>
> four? wimp, that's nothing!
>
> ok, seriously I think t
On Tue, 2004-04-06 at 10:29, Robert Treat wrote:
> Trying to come up with the proper syntax to meet the following criteria:
>
> create table foo (bar integer, baz boolean UNIQUE (bar, baz = true));
Tt takes 2 steps.
CREATE TABLE ...
CREATE UNIQUE INDEX ... (bar) WHERE baz = true;
> However, this query does not give me the result I expected. It appears that
> the database engine first calculates the cartesian product of the tables A
> and B and then evaluates the query. Hence, I get multiple matches for
Yup.. WHERE filters the results of the join.
> Is there any way to do
logic, or
lack thereof, but accounting needs to use both sets of information to do
their work.
Otherwise, having each group relegated to their own schema with
semi-public views is a nice way to pass information from department to
department for small companies. Sure beats the spreadsheets on the
centr
> Note that the ' marks aren't part of the string, they are the delimiter of
> the string, and I always run every server with magic_quotes_gpc on.
>
> anything else? :-)
Good point. I looked at the single quotes of the second line and somehow
the DEFAULT got quoted as well ;)
-
> and then you can foreach across the input:
>
> foreach($fields as $f){
> if (!$_POST[$f]){
> $_POST[$f]='DEFAULT';
> } else {
> $_POST[$f] = "'".$_POST[$f]."'";
> }
> }
Default in quotes isn't going to work, and please tell me you escape
those things with pg_escape_string() at som
On Thu, 2004-02-12 at 05:06, Fredrik Wendt wrote:
> Hi!
>
> I read posts telling me that NULL values are considered greater than
> non-null values. Fine. Is there a way to explicitly reverse this?
ORDER BY column IS NOT NULL, column ASC;
---(end of broadcast)
. Statistics list the 10 most common
values (all of them). Given this, would it not be reasonable to assume
that 239 is a recent addition (if there at all) to the table and not
very common?
--
Rod Taylor
Build A Brighter Lamp :: Linux Apache {middleware} PostgreSQL
PGP Key: http://www.rbt.
On Thu, 2004-02-12 at 23:25, Tom Lane wrote:
> Rod Taylor <[EMAIL PROTECTED]> writes:
> > Statistics say there are 10 values. Statistics list the 10 most common
> > values (all of them). Given this, would it not be reasonable to assume
> > that 239 is a recent additi
Most of the queries are going to be for the other values (in which case
you've wasted an index scan) which is minor, but in the event there is a
single 239 you're still taking a big hit.
That is an awful lot of work to handle the non-existant case only.
--
Rod Taylor
Build
> select val1+val2 as val
> from some_table
> group by val having val>1;
> ERROR: Attribute "val" not found
>
> Is it a bug or a feature?
It's a mis-feature that group by accepts aliases of the select list.
Having is proper.
---(end of broadcast)--
> TRUNCATE cannot be used inside of a transaction, and since 7.3 it checks
> for foreign keys. So I guess Enio is getting but ignoring the error
In 7.4 truncate is transaction safe.
---(end of broadcast)---
TIP 1: subscribe and unsubscribe comma
> tables but it introduces too much overhead. In any case, we need the return
> value (or an exception) from the function but there does not seem a way to
> return it.
Can't you use erreport() to return an exception message?
---(end of broadcast)-
> Suppose by example that one have a table1 with a primary key over three
> field (a, b, c):
..
> are the indexes over (a) and (a, b) redundant (and so useless)?
Yes, they are redundant not not necessarily useless.
In short, an index with 3 keys will be larger than an index with 1 key,
as such
> Although i am not aware of the roots of this discussion but would like
> to
> comment at this point .
>
> When we work with sequences an aborted transaction does have
> a permanent effect on the last value of sequence. Is this behaviour
> not a violation of above defination of transaction ?
I
> be recovered either. When committing a transaction the effects of all
> operations that did not fail will be made permanent. This is how
> transaction processing is described in the literature.
I would be interested in reading that (URLs please) as I didn't see
anything in the spec that was inte
> ie, a function that returns difference of two dates(timestamp) in days
> or months or year..
>
> The - operator for timestamp retuns the intervel in days only.
rbt=# select extract('days' from current_timestamp -
'2003-01-01'::timestamp);
date_part
---
310
(1 row)
On Sun, 2003-11-02 at 19:42, Mark Stosberg wrote:
> On 2003-10-22, Timo <[EMAIL PROTECTED]> wrote:
> >
> > You can't have any recursion in an pure sql-query, can you?
>
> It depends on how you think of recursion, I'd say. You join on the same
> table a number of times, by giving it a different ali
> What I did next, is put a trigger on pg_attribute that should, in theory,
> on insert and update, fire up a function that will increment a version
System tables do not use the same process for row insertion / updates as
the rest of the system. You're trigger will rarely be fired.
signature.asc
rbt=# create table bob_is(your_uncle integer, constraint
"bob_is#your_uncle" check(true));
CREATE TABLE
rbt=# \d bob_is
Table "public.bob_is"
Column | Type | Modifiers
+-+---
your_uncle | integer |
Check constraints:
"bob_is#your_uncle" CHECK true
Yo
On Wed, 2003-10-22 at 05:26, sad wrote:
> Hello
>
> i'am logged in as superuser (pgsql)
> trying to
> SELECT * FROM pg_stat_activity;
> and seeing NULLs instead of current_query column&
You need to change the stats settings in postgresql.conf. By default
the current query is not enabled as it d
On Tue, 2003-10-14 at 22:09, aicean wrote:
> How can I produce the following desired result?
I'm not sure I understand the problem, but you might want to try a
subselect in the FROM.
SELECT
FROM table
JOIN (SELECT goodid
FROM table
WHERE
) AS tab
USING (good
> > Perhaps you are confusing it with the MySQL query cache?
> Is there plan on developing one (query cache)?
For the most part, prepared queries and cursors give you a greater
advantage due to their versatility -- both of which we do have.
In the cases where an actual cache is useful, the clien
>-> Seq Scan on table1 (cost=0.00..20.00 rows=1000 width=0) (actual
Run VACUUM ANALYZE, then repost your EXPLAIN ANALYZE results please.
signature.asc
Description: This is a digitally signed message part
> I guess, ideally it'd be
> create type AddressType AS varchar(50) ;
> but it does not work.
Only one keyword off. SQL calls this a domain.
They're limited in 7.3, but much improved (not yet perfect) for 7.4.
http://www.postgresql.org/docs/7.3/interactive/sql-createdomain.html
signature.asc
> in other words, all but the first row of a group.
Interesting question. The below should work and be quick so long as
there is a UNIQUE(col1, col2) constraint.
SELECT col1
, col2
FROM j
WHERE col2 != (SELECT col2
FROM j AS jsub
WHERE col1 = j.col1
> The problem is we are using PostGres 7.1.In this version REPLACE() is not
> available.
It sounded like you were just starting to work on the change over. I
highly suggest upgrading to 7.3 at the very least, 7.4 if you're going
to be a few months prior to going to production. A ton of good work
On Mon, 2003-09-08 at 09:44, Jomon Skariah wrote:
> Hi,
>
> Do we have any replacement for REPLACE() of Oracle in PostGres?
What does replace() do? String replacement?
http://www.postgresql.org/docs/7.3/interactive/functions-string.html
replace(string text, from text, to text)
signature.asc
On Sun, 2003-09-07 at 07:42, Alexei Chetroi wrote:
> On Sat, Sep 06, 2003 at 01:21:36PM -0400, Rod Taylor wrote:
> > > I'd like to write a query which returns following information regarding
> > > each item: item, date of very first event, very last event.
> > &g
> I'd like to write a query which returns following information regarding
> each item: item, date of very first event, very last event.
> Is this possible? I think I can write several SELECT queries and
> procces them by an application or possibly write some procedure, but
> what is better soluti
On Fri, 2003-09-05 at 00:24, Jomon Skariah wrote:
>
> Hi,
>
> Thanks for your replys.
>
> We are facing another problem now.
>
> we need to find an alternative for Oracle's ADD_MONTHS in PostGres..
Guessing based on the name that it adds a quantity of months to a
timestamp. How about an SQL I
> 1)Do we have a replacement in PostGres for MINUS operator of Oracle .
I believe MINUS is non-standard word for EXCEPT, correct?
> 2 Also I need to find an alternative for ROWNUM in oracle..
If you are looking for a unique identifier, try using the OID.
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> What is measured by the \timing option? The figures reported
> are slightly larger than those loged when the log_duration parameter
> is true.
The time of the psql client. It will include round trip activity
including network overhead.
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On Wed, 2003-08-20 at 17:41, Stephan Szabo wrote:
> On Wed, 20 Aug 2003, Rod Taylor wrote:
>
> > > Thanks, Stephan. I was really hoping that the IN(valuelist) was going to
> > > be changed at the same time, because it really is unusable for anything
> > >
Ensure your IN list is unique. You might find better times by through
an indexed temp table.
On Wed, 2003-08-20 at 16:32, Mike Winter wrote:
> I'm sure many on this list are sick of hearing about this problem, but it
> was on the fix list for 7.4, but doesn't appear to have been changed.
>
> You
> Thanks, Stephan. I was really hoping that the IN(valuelist) was going to
> be changed at the same time, because it really is unusable for anything
> over a couple of thousand values.
Changed to do what?
I suppose that the ability to combine several index scans via a bitmap
would help to linear
On Mon, 2003-08-18 at 03:05, Moonstruck wrote:
> I want to create a table of regular expression patterns (for assessing
> phone numbers), something like:
> CREATE TABLE CallType ( pattern varchar primary key,
> typevarchar,
> rateint4);
> INS
> In another language I would do:
> find first Order where Order.Order_num = "".
> if avaialble Order then it_exists = true.
>
> In PostgreSQL ?:
> SELECT DISTINCT Order_num from Order_header where Order_num = '';
>
> Is this close? If so, how to raise flage that row exists?
>
> insert into state (state_code,state) values ('GU','Guam');
> drop table whitepage;
> delete from state where state_code = 'GU';
> ERROR: Relation "whitepage" does not exist
Old version of PostgreSQL? Effort went into cleaning up inter-object
dependencies in 7.3. I don't recall having that pa
On Wed, 2003-08-13 at 07:56, [EMAIL PROTECTED] wrote:
> Hi,
>
> I want to insert descriptions at the columns of my tables but without
> using the command COMMENT ON. I want to do it together with the table
> creation. Is that possible?
>
> I wanna do something like this:
>
> create table test
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