Re: [SQL] regarding grant option

2006-03-01 Thread Jim C. Nasby
ompany - Command Prompt, Inc. > > ---(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 > -- Jim C. N

Re: [SQL] Replication - state of the art?

2006-03-01 Thread Jim C. Nasby
t addicted, is all. > > A > > -- > Andrew Sullivan | [EMAIL PROTECTED] > Information security isn't a technological problem. It's an economics > problem. > --Bruce Schneier > > ---(end of broadcast)--- > TIP

Re: [SQL] Problem with query on history table

2006-03-01 Thread Jim C. Nasby
fied, hist.modified > as > hist_modified, coalesce(hist.etc, curr.etc) as etc FROM curr LEFT OUTER JOIN > hist ON(curr.id = hist.curr_id) WHERE ... > > I'm really stuck here. It seems to me that I need a lot of > CASE...WHEN...ELSE.. statements in the query, but

Re: [SQL] Is there any way to stop triggers from cycling?

2006-03-08 Thread chester c young
trying to do this exlusively in triggers is a forray into folly. take advantage of "instead of" or "do also" rules to create a compound statement before your triggers do their work. (in terms of maintenance and sanity, it's best if a trigger touches only its own record.) as a handsweep example:

Re: [SQL] Question re: relational technique

2006-03-12 Thread chester c young
--- Robert Paulsen <[EMAIL PROTECTED]> wrote: > One problem with the above is that the list of attributes is fixed. I > am looking for a way to assign new, previously undefined, attributes to > items without changing the table structure. Is it ever appropriate to do > the following? > ... There a

Re: [SQL] Expressing a result set as an array (and vice versa)?

2006-03-27 Thread Jim C. Nasby
id ) FROM bookmarks; > array_accum > --- > {1,2,3,4,5,7} Couldn't you just use array()? -- Jim C. Nasby, Sr. Engineering Consultant [EMAIL PROTECTED] Pervasive Software http://pervasive.comwork: 512-231-6117 vcard: http://jim.nasby.net/

Re: [SQL] SQL Query Newbie Help

2006-03-27 Thread Jim C. Nasby
select T.* from quality_control_reset T inner join > (select qualitycontrolrange, max(date) as date from quality_control_reset > group by qualitycontrolrange) T2 > on (T.qualitycontrolrange = T2.qualitycontrolrange and T.date=T2.date); BTW, I believe the new row operator fixes in 8.2

Re: [SQL] Question about One to Many relationships

2006-03-27 Thread Jim C. Nasby
, you should link a band to a track, not an album. > This opens another can of worms... > > I would use the following tables : BTW, if you're going to be writing code to manage stuff like this, you should absolutely check out the source for http://musicbrainz.or

Re: [SQL] Find min and max values across two columns?

2006-03-27 Thread Jim C. Nasby
CT max(greatest(column_a, column_b) ... SELECT min(least(column_a, column_b) ... There may be a difference in performance between the two. -- Jim C. Nasby, Sr. Engineering Consultant [EMAIL PROTECTED] Pervasive Software http://pervasive.comwork: 512-231-6117 vcard: http://ji

Re: [SQL] unique names in variables and columns in plsql functions

2006-03-27 Thread Jim C. Nasby
Because of this I *always* prefix plpgsql variables with something, such as p_ for parameters and v_ for general variables. -- Jim C. Nasby, Sr. Engineering Consultant [EMAIL PROTECTED] Pervasive Software http://pervasive.comwork: 512-231-6117 vcard: http://jim.nasby.net/perva

Re: [SQL] unique names in variables and columns in plsql functions

2006-03-27 Thread Jim C. Nasby
ystem more usable if the parser tried to apply a heuristic rule > about some occurrences being meant as variable references and other ones > not. If the rule ever got it wrong, it'd be even more confusing. BTW, I believe SELECT investment_products.provider_id would work here, but I'm

Re: [SQL] Migrating a Database to a new tablespace

2006-04-24 Thread Jim C. Nasby
chaber | Logical Tracking&Tracing International AG > Dipl. Inf. | Software Development GIS > > Fight against software patents in EU! www.ffii.org www.nosoftwarepatents.org > > ---(end of broadcast)--- > TIP 4: Have you searched ou

Re: [SQL] Migrating a Database to a new tablespace

2006-04-26 Thread Jim C. Nasby
ftp://candle.pha.pa.us/pub/postgresql/mypatches/checkfile.* > > Let me know if you want details. Is it able to also delete the cruft? Seems to be a useful extension, especially on windows, which AFAIK doesn't have an equivalent to ``. -- Jim C. Nasby, Sr. Engineering Consultant

Re: [SQL] LinkedList

2006-04-26 Thread Jim C. Nasby
rently. > > You should be able to do this with a fairly simple self-join... > > select a.id, b.aid, a.field1, b.field1 > from mytable a > join mytable b > on (a.id=b.aid) > > Or something like that. > > ---(end of broadcast)--- > T

Re: [SQL] (Ab)Using schemas and inheritance

2006-05-23 Thread Jim C. Nasby
other consideration is that the free space map doesn't care too much for tracking space info on tons of small tables. Perhaps the biggest issue is: what happens when you need to do DDL? If you have 1000 schemas that should be identical, you'll need to perform any DDL 1000 times. But as

Re: [SQL] pgxml & xpath_table

2006-06-08 Thread Jim C. Nasby
THOUT OIDS; > > INSERT INTO test VALUES (1, ' num="L1">123 num="L2">112233'); > > INSERT INTO test VALUES (2, ' num="L1">111222333 num="L2">111222333'); > > > > If I launch this qu

[SQL] to_char with time

2006-06-13 Thread chester c young
this does not work: select to_char(current_time,'HH24:MI')what am I missing?  is it possible to format a time column in a select?thanks,stumped, aka, chester __Do You Yahoo!?Tired of spam? Yahoo! Mail has the best spam protection around http://mail.y

[SQL] sessions and prepared statements

2006-06-15 Thread chester c young
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?and/or how do you get a list of prepared statements?last, is there any after login trigger that one could use to prepare statements the sess

[SQL] how to tell if column set on update

2009-07-20 Thread chester c young
within a trigger need to know if the UPDATE statement set a column. the column might be set to the old value or a different value. (want to make sure the app is sending all necessary values) thanks -- Sent via pgsql-sql mailing list ([email protected]) To make changes to yo

[SQL] unused columns in copy

2009-07-20 Thread chester c young
is there a way for COPY FROM to ignore unused columns in CSV? in other words, if table t1 has columns c1, c2, and if csv has columns c1, c3, c2, could I do something like COPY t1( c1, null, c2 ) FROM 'file.csv' -- Sent via pgsql-sql mailing list ([email protected]) To make cha

Re: [SQL] how to tell if column set on update

2009-07-21 Thread chester c young
> Le 20/07/09 15:19, chester c young a écrit : > > within a trigger need to know if the UPDATE statement > set a column.  the column might be set to the old value > or a different value. > > > > (want to make sure the app is sending all necessary > values) > >

[SQL] best performance for simple dml

2011-06-26 Thread chester c young
what is the best performance / best practices for frequently-used simple dml, for example, an insert 1. fast-interface 2. prepared statement calling "insert ..." with binary parameters 3. prepared statement calling "myfunc(..." with binary parameters; myfunc takes its arguments and performs an in

Re: [SQL] best performance for simple dml

2011-06-26 Thread chester c young
: "chester c young" Cc: [email protected] Date: Monday, June 27, 2011, 12:35 AM Hello try it and you will see. Depends on network speed, hw speed. But the most fast is using a COPY API http://www.postgresql.org/docs/9.0/interactive/libpq-copy.html Regards Pavel Stehule 2011/6/

Re: [SQL] best performance for simple dml

2011-06-27 Thread chester c young
very nice pointers.  thank you very much! --- On Mon, 6/27/11, Pavel Stehule wrote: From: Pavel Stehule Subject: Re: [SQL] best performance for simple dml To: "chester c young" Cc: [email protected] Date: Monday, June 27, 2011, 1:05 AM 2011/6/27 chester c young > > tw

Re: [SQL] best performance for simple dml

2011-06-27 Thread chester c young
it's a very cool paradigm, but is it actually a good idea? --- On Mon, 6/27/11, Pavel Stehule wrote: From: Pavel Stehule Subject: Re: [SQL] best performance for simple dml To: "chester c young" Cc: [email protected] Date: Monday, June 27, 2011, 1:05 AM 2011/6/27 ches

[SQL] partitions versus databases

2011-12-08 Thread chester c young
have an db with about 15 tables that will handle many companies. no data overlap between companies. is it more efficient run-time to use one database and index each row by company id, and one database and partition each table by company id, or to create a database for each company? it is a we

[SQL] pg_dump not correctly saving schema with partitioned tables?

2012-01-31 Thread chester c young
have database with many partitions. each partition table has its own primary key sequence. Column || Modifiers ---++-- uno_id|| not null default nextval('cmp0004.cmt_u

Fw: Re: [SQL] pg_dump not correctly saving schema with partitioned tables?

2012-01-31 Thread chester c young
> From: chester c young > Subject: Re: [SQL] pg_dump not correctly saving schema with partitioned > tables? > To: "Tom Lane" > Date: Tuesday, January 31, 2012, 5:40 PM > --- On Tue, 1/31/12, Tom Lane > wrote: > > > From: Tom Lane > > Subject:

Re: [SQL] possible bug in psql

2012-05-29 Thread chester c young
> > do not know if right mailing list > > > > in psql in Ubuntu, when beginning with a smaller > terminal, eg, 80 > > col wide, then moving to a larger terminal, eg, 132 col > wide, the > > readline(?) editor in psql still treats like 80 cols, > making it > > impossible to edit longer text.    >

[SQL] possible bug in psql

2012-05-28 Thread chester c young
do not know if right mailing list in psql in Ubuntu, when beginning with a smaller terminal, eg, 80 col wide, then moving to a larger terminal, eg, 132 col wide, the readline(?) editor in psql still treats like 80 cols, making it impossible to edit longer text. -- Sent via pgsql-sql mailing l

Re: [SQL] files or DataBase

2006-09-28 Thread Jim C. Nasby
On Fri, Sep 29, 2006 at 12:37:56AM +0200, tomcask o_o wrote: > Hi > > in advance, sorry for my english. > > in a Web server as is the best option? > > to accede to db to show the contents or to accede to static files modified > by scripts when the content of db has been modified. > > That the

[SQL] regexp_replace usage

2006-09-29 Thread chester c young
column name in table bue has miscapitalized Mc names, eg, 'John Mcneil' instead of 'John McNeil'.(this should be easy but) how do you construct the update query?also, regexp_string( 'Mcneil', 'Mc(.*)', initcap('\\1') ) => 'neil' _not_ Neil' - is this correct? All-new Yahoo! Mail - Fire up a mor

[SQL] tree-structured query

2006-09-29 Thread chester c young
in a simple tree structured tabletable t(  id primary key,  pnt_id references t( id ),  name);does anyone know an easy howbeit sneaky way of determining ancestory and decendency without recursive functions,select name from t where exists thanks for insight Get your own web address for just $1.

Re: [SQL] regexp_replace usage

2006-10-02 Thread chester c young
Thanks !Michael Fuhr <[EMAIL PROTECTED]> wrote:Offhand I can't think of a way to do what you want with regexp_replace()but you could use PL/Perl. Something like this should work:CREATE FUNCTION mcfix(text) RETURNS text AS $$ $_[0] =~ s/\bMc([a-z])/Mc\u$1/g; return $_[0];$$ LANGUAGE plperl IMMUTA

[SQL] timestamps over the web - suggestions

2006-10-03 Thread chester c young
My server is based MST, but web clients from Maine to Hawaii, and they wish to see timestamps based in their own locale.Can anyone tell me how they're handling this?  (sorry - can't get rid of my clients) Do you Yahoo!? Get on board. You're invited to try the new Yahoo! Mail.

Re: [HACKERS] timestamp subtraction (was Re: [SQL] formatting intervals with to_char)

2006-10-09 Thread Jim C. Nasby
On Mon, Oct 09, 2006 at 02:57:28PM -0500, Aaron Bono wrote: > On 10/5/06, Jim Nasby <[EMAIL PROTECTED]> wrote: > > > >On Oct 5, 2006, at 11:50 AM, Tom Lane wrote: > >> regression=# select ('2006-09-15 23:59:00'::timestamp - '2006-09-01 > >> 09:30:41'::timestamp); > >> ?column? > >> ---

Re: [SQL] Temp tables and functions

2006-10-10 Thread Jim C. Nasby
On Tue, Oct 10, 2006 at 03:21:36PM -0400, [EMAIL PROTECTED] wrote: > Everyone, > > I've written a function (language = sql) which uses a temporary table to > simplify the process; however, when I go to load the function I get: > > /var/lib/pgsql$cat thm.sql | psql test > ERROR: relation "lost_b

Re: [SQL] [HACKERS] Bug?

2006-10-18 Thread Jim C. Nasby
Moving to -sql. On Wed, Oct 18, 2006 at 06:53:46PM +0530, Indira Muthuswamy wrote: > Hai, > > I have encountered a problem with PostgreSQL.I have created a table > 'tab1' with a column 'a' with serial type.I entered 20 records into the > table.So the query > select max(a) from tab1; > returned 2

Re: [SQL] hi i want help on levels

2006-10-18 Thread Jim C. Nasby
Search the archives for hierarchical query. -- Jim Nasby[EMAIL PROTECTED] EnterpriseDB http://enterprisedb.com 512.569.9461 (cell) ---(end of broadcast)--- TIP 2: Don't 'kill -9' the postmaster

Re: [SQL] [HACKERS] Bug?

2006-10-19 Thread Jim C. Nasby
See section 9.12 of the docs. On Thu, Oct 19, 2006 at 12:28:58PM +0530, Indira Muthuswamy wrote: > Then how do we clear the values of a serial column(is it done only by > dropping the column?)? > > Regards, > M.Indira > > > > On 10/19/06, Jim C. Nasby <[EMAIL PR

Re: [SQL] Grouping by day, limiting amounts

2006-10-19 Thread Jim C. Nasby
On Thu, Oct 19, 2006 at 01:51:55PM +0200, Mezei Zolt??n wrote: > > Hi, > I didn't really know what subject I should give. > I have a table like this one: > 2006.10.01.Bela10 > 2006.10.01.Aladar9 > 2006.10.01.Cecil8 > 2006.10.01.Dezso7 > 2006.10.01.Elemer6 >

Re: [SQL] delete on cascade

2006-10-23 Thread chester c young
--- Luca Ferrari <[EMAIL PROTECTED]> wrote: > Hi all, > I guess this is an already asked question, but I didn't found an > answer, so > apologize me. Imagine I've got two tables: > skill(id,description) // primary key => id > family(id,description)// primary key => id > and I want

Re: [SQL] Can we convert from Postgres to Oracle !!???

2006-10-26 Thread Jim C. Nasby
On Sun, Oct 22, 2006 at 12:03:38AM +0300, Devrim GUNDUZ wrote: > On Tue, 2006-10-17 at 14:21 +0530, Sandeep Kumar Jakkaraju wrote: > > Can we convert from Postgres to Oracle !!??? You can also run our software and get Oracle syntax for 1/25th the cost. -- Jim Nasby

Re: [SQL] Add calculated fields from one table to other table

2006-10-28 Thread chester c young
roopa perumalraja <[EMAIL PROTECTED]> wrote: Hi   I have two tables. Tick table has fields like ticker, time, price & volume and Timeseries table has fields like ticker, time, avg_price, avg_volume.   The time field in Timeseries table is different from time in tick table, its the timeseries fo

Re: [SQL] [ADMIN] Is there anyway to...

2006-11-07 Thread Jim C. Nasby
Moving to -general (and please start a new thread instead of hijacking an existing one). On Thu, Nov 02, 2006 at 01:14:22PM -0500, louis gonzales wrote: > Hello all, > Is there an existing mechanism is postgresql that can automatically > increment/decrement on a daily basis w/out user interaction

Re: [SQL] or function

2006-12-30 Thread chester c young
--- "A. R. Van Hook" <[EMAIL PROTECTED]> wrote: > I have been trying to do an 'or' function such that if a field value > is > zero then use 1 as a multiplier: > "select sum((1 | i.count) * s.cost) as COST ... try "select sum( (case when i.count=0 then 1 else i.count end) * s.cost ) as COST ...

[SQL] quoted variables in pgsql

2007-01-04 Thread chester c young
cannot figure this out # \set var 'value' # select * from some_table where some_col = :var; ERROR: column value does not exist cannot get those quotes around the value. tried: # \set var ''value'' # \set var value in each case: # \echo :var value thanks ___

Re: [SQL] Query to return schema/table/columname/columntype

2007-01-19 Thread chester c young
> I am trying to modify the dabo (a python wxpython > ide for database forms creation) code to allow the > selection of tables in any schema. I need a query > that will return records with schema, table, > columname and columne type. create view pg_cols as select s.nspname as schema_nm,

Re: [SQL] simple web search

2007-02-23 Thread chester c young
> 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. one solution would be a view: c

Re: [SQL] simple web search

2007-02-23 Thread chester c young
> > create view search_v as select > > 'show'::name as tab_nm, > > show_id as tab_pk, > > 'Show Name' as description, > > show_name as search > > from show > > union select > > 'story'::name, > > story_id, > > 'Story Title', > > title > > from story > > union ... > > > What

Re: [HACKERS] timestamp subtraction (was Re: [SQL] formatting intervals with to_char)

2007-02-23 Thread Jim C. Nasby
Yes, but if it was '2004-01-02 01:00:00'-'2004-01-01 00:00:00' it should return 25:00:00, not 1 day 1:00. I agree with Tom that this should be changed; I'm just arguing that we might well need a backwards-compatibility solution for a while. At the very least we'd need to make this change very clea

Re: [SQL] inheritance

2007-03-08 Thread chester c young
> --- Greg Toombs <[EMAIL PROTECTED]> wrote: > > > I'm trying to figure out how to nicely implement a C++ class-likesystem > > with PostgreSQL. Consider the following: > > Tables Fruit, Apple, Orange you can do this traditionally or through pg inheritance, alt

Re: [SQL] inheritance

2007-03-08 Thread chester c young
--- Richard Broersma Jr <[EMAIL PROTECTED]> wrote: > > > > Maybe then you'll add a table basket that has a foreign key to the > fruit > > table... ;-) > > From the inheritance link: > ... > A serious limitation of the inheritance feature is that ... it's my understanding that inheritance h

[SQL] how to use a date range in a join

2007-03-12 Thread chester c young
trying to do something like select d.day, c.name from [dates between day1 and day2] d left join c.some_table; but cannot figure out what to put into the brackets. Finding fabulous fare

[SQL] better approach: case or join

2007-03-18 Thread chester c young
from id extracting name from several tables. which is generally the better approach? select case when tab_tla='usr' then (select name from users where ... ) case when tab_tla='con' then (select title from contents where ...) endas name; as versus select name fromusers where ta

Re: [SQL] Foreign Unique Constraint

2007-03-27 Thread chester c young
> > create table table1 ( > id SERIAL PRIMARY KEY > extension UNIQUE, > > ) > > create table table2 ( > id SERIAL PRIMARY KEY > extension UNIQUE, > > ) > > Basically table 1 and table 2 both have the concept of an extension > that must be unique but the rest of the info in the tables are > di

Re: [SQL] Large journal as psql table. Good idea? Triggering.

2007-04-23 Thread chester c young
> But I'm thinking that maybe it's a job for a database table. Each > new > row would be written with a status (10="new"). And that the modem > process would poll for new rows. Problem is there will be lots of > rows, > but only a trivial few will be "new". The huge index file and the > pollin

Re: [SQL] Selecting rows with "static" ordering

2007-04-26 Thread chester c young
> them in the order they are currently stored in that variable. So take > > for example this foreign application variable: > >ids = "3,2,5,1,4" kludgy, but: 1. store your ids in a pg array 2. select from the array 3. on order by, write a function that takes the row.id and array as paramet

Re: [SQL] Count rows by day interval

2007-05-10 Thread chester c young
> ... instead of date_trunc('day',sent_messages.date) why don't you have a function that takes four three arguments: - beginning date of query - interval, ie, reminder_services.activity_days_min - timestamp, ie, sent_messages.date have it return the minimum date for that interval as I think I u

Re: [SQL] Adding "on delete cascade" to all foreign key constraints

2007-05-15 Thread Jim C. Nasby
On Tue, May 15, 2007 at 12:19:54PM -0500, Peter Hanson wrote: > Hello, > > I was wondering if there's a fast way I can add "on delete cascade" to all > foreign key constraints in my database? Maybe a quick update I can make > against the catalog possibly? Or is there a way I can query for all f

Re: [SQL] ignoring primary key violations in COPY command

2007-05-19 Thread chester c young
> In my opinion your best bet in terms of getting around the primary > key > violation is to create a temporary table ... good idea! from my experience it's almost always best to pull raw info into a buffer table before introducing it into the real world. ___

[SQL] off topic

2007-05-24 Thread chester c young
on lwn I read that pg is having problems releasing because of a want of reviewers. although my C is far too rusty I'd like to help out, perhaps with doc or testing. can someone direct me to the appropriate

[SQL] schema propagation

2007-06-01 Thread chester c young
Hi has anyone done any work on comparing schemas? I'm trying to automatically propagate changes in a master schema to child schemas. All schema changes will originate at master. Currently child schemas are in the same database, but in the future might be in different databases (clusters?). tha

[SQL] search path within trigger

2007-06-09 Thread chester c young
within a table pl/pgsql trigger, what's the easiest way to see if the schema for the triggered table is the same as search_path? Be a better Globetrotter. Get better travel answers from someone who knows.

[SQL] trigger firing order

2007-06-15 Thread chester c young
tables A and B: a post row trigger on A cause updates on B which has its own post row trigger. does the post trigger on A wait until post trigger on B is executed? - this seems intuitive to me. does the post trigger on B wait until the trigger on A has completed? or is post trigger A launched as

Re: [SQL] trigger firing order

2007-06-15 Thread chester c young
> > does the post trigger on A wait until post trigger on B is > executed? -> > this seems intuitive to me. > > How can it wait until the trigger on B is executed if the trigger on > B doesn't > actually get triggered until someone updates B and it's the trigger > on A > doing the update? trigge

Re: [SQL] Iterate and write a previous row to a temp table?

2007-07-03 Thread chester c young
--- Bob Singleton <[EMAIL PROTECTED]> wrote: > Revisiting a Time In Status query I received help on - I'm trying to > narrow down a subset of data I return for analysis. > > Given a statusLog as entityId, statusId, timestamp that might look > something like > > entityId | statusId | timestamp

Re: [SQL] Converting from MS Access field aliases

2007-07-12 Thread chester c young
>SELECT field1 / 2 AS foo, > field2 * 2 AS bar, > foo + bar AS total >WHERE foo < 12; > > The first two fields are fine, it's the third that's a problem. The > database reports > >ERROR: column "foo" does not exist > First, I think it would be great if this w

Re: [SQL] data dependent sequences?

2007-07-15 Thread chester c young
> > CREATE TABLE items ( > id INT, > typ INT... > PRIMAY KEY (seq,typ)); > >id typ > +- > 1 'a' > 2 'a' > 3 'a' > 1 'b' > 4 'a' > 2 'b' > you will need to use pre insert trigger since you cannot use column references in defaul

Re: [SQL] Assistance with a trigger

2007-07-25 Thread chester c young
--- Paul Lambert <[EMAIL PROTECTED]> wrote: > I have some triggers in an MS SQL server database which I need to > copy > across to a PG database. I've not yet done triggers in PG so I was > hoping to get a little bit of a pointer on the first one as a place > to > start and work my way through

[SQL] problem join

2007-07-26 Thread chester c young
having problem joining these correctly: schedule - cal_id references calendar not null - usr_id references users not null = unique( calZ_id, usr_id ) - result_no not null activity - cal_id references calendar not null - usr_id references users not null = unique( cal_id, usr_id ) - from_ts timesta

Re: [SQL] Authentification failed

2007-08-01 Thread chester c young
> I'm trying in SUSE to connect to a postgres db and this is the > error: > > Ident Authentification failed for user <> > others will guide better, but for now, in pg_hba.conf # "local" is for Unix domain socket connections only local all all iden

Re: [SQL] Comparing two slices within one table efficiently

2007-08-13 Thread chester c young
> I have a table with the following simplified form: > > create table t ( > run_id integer, > domain_id integer, > mta_id integer, > attribute1 integer, > attribute2 integer, > unique(run_id, domain_id, mta_id) > ); > > The table has about 1 million rows with run_id=1, another 1 million >

Re: [SQL] Execute SQL statements with 'context'/predefined variables

2007-09-03 Thread chester c young
> I was wondering if it is possible to set the 'context' for running an > sql command Oracle has a Context('varname') that returns the value of varname for the session. to best of my knowledge pg has nothing like this. > I guess bottom line, is it possible to execute a bunch of SQL > statements

Re: [SQL] Execute SQL statements with 'context'/predefined variables

2007-09-03 Thread chester c young
... > When you say use rules to inject constants, how would I go about > doing this? Could you maybe give a brief example? create view tab1_dml as select * from tab1; -- note: -- CONSTANT1 = 8 -- CONSTANT2 = 15 create or replace rule tab1_insert as on insert to tab1_dml do instead( ins

Re: [SQL] Extracting hostname from URI column

2007-09-11 Thread chester c young
> I'm trying to use substr() and position() functions to extract the > full host name (and later a domain) from a column that holds URLs. substring( href from '.*://\([^/]*)' ); Pinpoint customers who a

Re: [SQL] Extracting hostname from URI column

2007-09-11 Thread chester c young
> >> I'm trying to use substr() and position() functions to extract the > >> full host name (and later a domain) from a column that holds URLs. > > > > substring( href from '.*://\([^/]*)' ); > > typo: no backslash in front of left paren substring( href from '.*://([^/]*)' ) match up thru // wi

Re: [SQL] Extracting hostname from URI column

2007-09-11 Thread chester c young
> And what I'd like is something that would give me the counts for the > number of occurrences of each unique hostname. Something much like > `uniq -c'. Can anyone tell me how that's done or where I should look > for info? (I'm not sure what to look for,

[SQL] problems with copy

2007-09-24 Thread chester c young
I'm getting lots of delimited files from Excel and MySQL users that, mid-file, begin truncating lines if ending in null values. for example: 1781: "one","two","three",, 1782: "one","two","three",, 1783: "one","two","three",, (delimited files from Open Office are well behaved) is there any wa

[SQL] backup database tablespace with rsync?

2007-10-19 Thread chester c young
postgres A, db 'test', tablespace /pg/test1 postgres B, db 'test', tablespace /pg/test2 tablespace /pg/test1 only has A db 'test' tablespace /pg/test2 only has B db 'test' if - A and B shut down - /pg/test1 copied to /pg/test2 - A and B restarted would B db 'test' be running the data that was in

[SQL] general question on optimizer

2007-11-10 Thread chester c young
I have found that in many complex queries left join is exponentially faster than a (not) exists clause. I don't understand why, generally speaking, this is so frequently so effective. __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam

Re: [SQL] update on join ?

2007-11-21 Thread chester c young
> I tried > > UPDATE things JOIN inventory ON things.thing_id = inventory.thing_fk > SET number = 0 > WHERE color = 'red' > use the cool "from" clause in the update update things t set number = 0 from inventory i where t.thing_id = i.thing_fk and i.color = 'red'; _

Re: [SQL] Advice for generalizing trigger functions

2007-12-26 Thread chester c young
--- Richard Broersma Jr <[EMAIL PROTECTED]> wrote: > I've created quite a few functions that log modifications to various > history tables. (the history table has the same name as the base > table but is prefixed by the 'History.' schema.) The only difference > between functions I can find is the

Re: [SQL] Proposed archival read only trigger on rows - prevent history modification

2008-01-28 Thread chester c young
> I'm considering building a protective mechanism, and am seeking > feedback > on the idea. The approach would be to add a new column named "ro" to > each table at invoice level and below. Then have a trigger on > 'ro'==true deny the write, and probably raise a huge stink. As > invoice > are ma

[SQL] cursors and sessions

2008-03-13 Thread chester c young
is there any way to share a cursor between sessions? I have a costly query whose records need to be visited by in order by n number of concurrent sessions, and am unable to find the best way of doing this. I'd almost like to write a daemon that hands out the next record, but that's a royal pain t

Re: [SQL] Create on insert a unique random number

2008-03-18 Thread chester c young
> When inserting a record is there a way to have postgres create a > random number for a field such that it is unique? you could use oid Looking for last minute shopping deals? Find them fast with Ya

Re: [SQL] Date and filling issues

2008-03-20 Thread chester c young
> > A sample of the current results data would be like > datesales > 2008-03-07 100.00 > 2007-03-10 150.00 > 2007-03-18 50.00 > > and what I'm trying to do is fill in the missing dates with sales > values of 0. what I do is have a table called days t

[SQL] returning on inserts

2008-03-27 Thread chester c young
insert into t1( c1 ) select c1 from t2 returning t1.c1, t2.c2; ERROR: missing FROM-clause entry for table "t2" is there any way to make this work? Never miss a thing. Make Yahoo your home page. http://

[SQL] apparent RI bug

2008-04-02 Thread chester c young
it appears I have a broken RI in my db. call_individual.clh_id references call_household.clh_id \d call_individual ... Foreign-key constraints: "call_individual_clh_id_fkey" FOREIGN KEY (clh_id) REFERENCES call_household(clh_id) ON DELETE CASCADE however: development=# select clh_id from cal

Re: [SQL] apparent RI bug

2008-04-03 Thread chester c young
Stephan Szabo <[EMAIL PROTECTED]> wrote: > On Wed, 2 Apr 2008, chester c young wrote: > > > it appears I have a broken RI in my db. > Yeah, that looks pretty broken. Can you reproduce this from a clean > start repeatedly or is this a one off? Do you ever turn of

Re: [SQL] apparent RI bug

2008-04-03 Thread chester c young
--- Stephan Szabo <[EMAIL PROTECTED]> wrote: > Is it possible you ever had a before delete trigger that just did a > return > NULL rather than raising an exception? IIRC, explicitly telling the > system to ignore the delete will work on the referential actions. yes, it is possible, for example, a

Re: [SQL] apparent RI bug

2008-04-03 Thread chester c young
--- Stephan Szabo <[EMAIL PROTECTED]> wrote: > > is it is possible, for example, a function without a body or > without a "return old". > > > > are you saying this would override the RI constraint? > > If it returned something that would have prevented the delete without > an error, yes. this is

Re: [SQL] trim(both) problem?

2008-04-25 Thread chester c young
--- Emi Lu <[EMAIL PROTECTED]> wrote: > Isn't this a bug about trim both. > > select trim(both '' from 'ROI Engineering Inc.'); > btrim > - > OI Engineering Inc. > (1 row) > > > "R" is missing? How? you misread - '' argument is a list of characters, _not_ a st

[SQL] psql: no schema info

2008-04-27 Thread chester c young
have several schemae, each with identical tables. in create scripts have been taking great care to fully qualify, eg, col1 references schema1.tab1( col1 ) however, just got burnt big time on sequences! need to qualify them as well, eg col1 integer default nextval( 'schema1.seq1' ) \dt is no

Re: [SQL] psql: no schema info

2008-04-27 Thread chester c young
> > however, just got burnt big time on sequences! need to qualify > them as > > well, eg > > col1 integer default nextval( 'schema1.seq1' ) > > Move to something newer than 8.0.x, and this is automatic (because > nextval's argument is actually a regclass constant). > >

Re: [SQL] psql: no schema info

2008-04-28 Thread chester c young
> > # \dt table1 -> does not show which schema info. was wrong on this - \dt shows schema for relations _not_ in the search path. my new good practice is to keep search_path = PUBLIC so all schema info is displayed always all the time invariably.

Re: [SQL] columns for count histograms of values

2008-04-30 Thread chester c young
--- Alexy Khrabrov <[EMAIL PROTECTED]> wrote: > Greetings -- I have a table of the kind > > Ratings: > id integer > rating smallint > > -- where value can take any value in the range 1 to 5. Now I want to > > have a statistical table Stats of the form > > id integer > min smallint > max sma

Re: [SQL] numbering rows on import from file

2008-05-02 Thread chester c young
--- Alexy Khrabrov <[EMAIL PROTECTED]> wrote: > Now I want to number the rows, adding an id column > as an autoincrement from a sequence. How should I do the import now > for the sequence to work -- should I add the id column last, so it > will not be filled by copy and presumably autoincrem

Re: [SQL] Difference in columns

2008-05-11 Thread chester c young
--- Mag Gam <[EMAIL PROTECTED]> wrote: > Hi All, > > I have a view that generates output similar to this. > > select * from foo.view; > >ts | size > ---+- > 2002-03-16| 11 > 2002-03-17| 16 > 2002-03-18| 18 > 2002-03-19| 1

Re: [SQL] SQL question....

2008-05-20 Thread chester c young
> create table access (name text, address ip) > > I want to construct a SELECT statement which will return ONLY tuples > containing IP and name pairs IF there is an IP that has two or more > NAMEs associated with it. > > many ways: select a1.* from access a1 where exists( select 1 from ac

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