Your explanation goes here.;
If you need to hide this column from you uses, you can use a view.
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disable a check constraint.
Perhaps a staging table is advisable here?
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, project_id, date_trunc( 'day', ts )
ORDER BY date_trunc( 'day', ts ), user_id, project_id;
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*
FROM Yourtable AS B
WHERE B.id = A.id
AND B.ts A.ts - INTERVAL '5 MINUTES'
AND B.tx A.ts )
ORDER BY id, ts;
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= Accum_ts.id
AND B.ts = Accum_ts.ts - INTERVAL '5 MINUTES'
GROUP BY B.id
HAVING MIN( B.ts ) = MAX( B.ts ))
SELECT id, ts
FROM Accum_ts
ORDER BY id, ts;
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To make
= SELECT (NULL::DATE = '2011-04-01'::DATE AND NULL::DATE =
'2011-04-30'::DATE) IS UNKNOWN;
?column?
--
t
(1 row)
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is the arguments all evaluate
to TRUE. No rows will be returned for rows that cause the WHERE
clause to evaluate to a NULL value.
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/docs/9.1/static/datatype-geometric.html
http://www.postgresql.org/docs/9.1/static/sql-createindex.html
http://www.depesz.com/index.php/2010/01/03/waiting-for-8-5-exclusion-constraints/
Is this correct?
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On Tue, Dec 7, 2010 at 1:47 PM, Tony Capobianco
tcapobia...@prospectiv.com wrote:
Why did I need to cast both as text though?
http://www.postgresql.org/docs/8.3/interactive/release-8-3.html#AEN87134
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data to the new
schema.
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should work:
UPDATE foo
Set x = y
WHERE id = ANY( CAST( string_to_array( '1,2,3,4', ',' ) AS INTEGER[] ));
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To make
instead of 't' and 'f'. For the sake of compatibility
(especially bareword integers in queries), I've defined a 'sybit' type
in postgres to be a domain.
One thought would be see if ODBC configuration options will achieve
this for you. Have you already exhausted this option?
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could find.
I know that there are a couple of options that affect the
representation of Booleans in the odbc driver. I'm not sure it will
do what you need though.
However, here is the official documentation: (hopefully it helpful)
http://psqlodbc.projects.postgresql.org/
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Richard
PDTSTATEMENT:
BEGIN;
UPDATE public.structures
SET scoped=E'-1'
WHERE buildingfunction = E'CRANE OPERATOR STATION'
AND xmin = 20497
-06-08 14:39:43 PDTLOG: duration: 0.000 ms statement: ROLLBACK
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hard to get correct. They
sometimes do unexpected things.
It looks like the CREATE Trigger FOR EACH STATEMENT is better suited to do
what you want:
In addition, triggers may be defined to fire for a TRUNCATE, though only FOR
EACH STATEMENT.
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, does any better?
From my limited experience, I believe is does do better. The
following blogs as a few entries about using Base:
http://www.postgresonline.com/journal/archives/167-Importing-data-into-PostgreSQL-using-Open-Office-Base-3.2.html
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has a give-away that this is
a set returning function: jfcs_balancedue('%s') since it has a
parameter.
Notice the function name section taken from the from clause:
http://www.postgresql.org/docs/9.0/static/sql-select.html#SQL-FROM
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with the newly discovered
itemnbr. */
2010-05-21 07:28:38 PDTLOG: statement: SELECT
itemnbr,action,startdate,completiondate
FROM public.actionitems
WHERE itemnbr = 49
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in recent versions auto increment is recognized by MS-Access
just fine (I'm guessing this is due to the Return clause which the
ODBC driver automatically calls).
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:= 'CURRENT_DATE';
LOOP
I'm not up on my pl/pgSQL, but isn't CURRENT_DATE a literal value so
it shouldn't to be enclosed in single quotes?
Another idea would be to: CAST( now() AS DATE )
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( WHERE n = 1)
p2082849b- SELECT n,c,d FROM T;
INSERT 0 10001
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to?
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, opendays
WHERE opendays.day = ds.discstartdt AND opendays.day =
LEAST('now'::text::date, ds.resolutiondate)
GROUP BY opendays.day, ds.resolvingparty
ORDER BY opendays.day, ds.resolvingparty;
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constraints.
While 8.4 has CTE's which are good for querying adjacency list tree,
we need to wait for write-able CTE's (maybe 9.1?) to preform all of
the possible tree modifications.
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,
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. Each cabin is
defined by a category according the set in the cabin_category table.
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overlap, this is an indication of a violation
of the second normal form (I believe).
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To make changes to your
the results
from a *single* base table.
Having said all of this, it is possible to do what your describing.
I've seen Keith Larson make update-able views from a composite of
selected UNION and FULL OUT JOIN queries. But his solution was
extremely hackish.
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I noticed a few new SQL references in the manual:
CREATE SERVER
CREATE FOREIGN DATA WRAPPER,
CREATE USER MAPPING
Is this similar to DBI-Link?
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have some problem and how to fix this?
Are you sure that you didn't just misspell address?
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To make changes
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5050
(1 row)
broersr= WITH RECURSIVE t(n) AS (
broersr( VALUES (1)
broersr( UNION ALL
broersr( SELECT n+1 FROM t WHERE n 100
broersr( )
broersr- SELECT sum(n) FROM t;
sum
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(1 row)
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On Wed, Nov 4, 2009 at 2:11 PM, Tom Lane t...@sss.pgh.pa.us wrote:
Richard Broersma richard.broer...@gmail.com writes:
Can anyone one explain why a WITH RECURSIVE query has the same
results regardless whether UNION or UNION ALL is specified?
Well, if the rows are all different anyway, UNION
On Wed, Nov 4, 2009 at 2:11 PM, Tom Lane t...@sss.pgh.pa.us wrote:
Richard Broersma richard.broer...@gmail.com writes:
Can anyone one explain why a WITH RECURSIVE query has the same
results regardless whether UNION or UNION ALL is specified?
Well, if the rows are all different anyway, UNION
for?
SELECT R.region_name, Count(*) AS RegionComplaints
FROM Region AS R
LEFT JOIN City AS Ci
ON R.id = C.region_id
LEFT JOIN Complaint AS Cm
ON Ci.id = Cm.city_id
GROUP BY R.region_name;
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;
SELECT
R.region_name,
Count(*) AS RegionComplaints
FROM
Region AS R
LEFT JOIN City AS Ci
LEFT JOIN Complaint AS Cm ON Ci.id = Cm.city_id
ON R.id = C.region_id
GROUP BY
R.region_name;
Yup, it produces the same result.
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(*) more since it helps to correctly express the idea that we are
counting rows per group and not cm.id(s) per group.
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(other flavors are available also).
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EAV for a column
instead of a table.
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unless the foreign key is set with ON UPDATE
CASCADE then the shifts will be cascaded to all references
automatically.
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common solution is
to use optimistic locking, another solution that I know of is to use
serialized transaction isolation.
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is an example how how ADODB.Stream class work in conjunction with
ADODB.command prepared statements to push binary data into a field.
The same should work with PostgreSQL.
http://www.databasedevelopment.co.uk/examples/StoredBlobs.zip
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can update the data with
copy, and otherwise not touch it.
One Idea that popped into my head that may-or-may-not work would be to
add a constraint trigger that checks if all of the detail records have
the same xmin as the order table record.
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) AS closed
FROM ( SELECT start_date AS date
FROM Yourtable
GROUP BY start_date
UNION
SELECT end_date AS date
FROM Yourtable
GROUP BY end_date ) AS A
ORDER BY A.date;
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duplicates) across multiple relationships, then using natural primary
keys becomes very attractive.
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To make
that subscribe to www.utteraccess.com
get bitten. From what I've seen not one day has gone by without
someone posting a question to this site about how to both find and
remove all but one of the duplicates.
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= D.id
OR A.id + 1 = D.id;
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ON A.id - 1 = D.id
OR A.id + 1 = D.id;
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to enforce business rules using
ordinary table DDL, I try to use natural keys as often as I can.
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To make changes
surrogate keys
(for me) are only way to go.
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On Tue, Sep 16, 2008 at 6:37 AM, Frank Bax [EMAIL PROTECTED] wrote:
That pass the SQL into crosstab().
It might be interesting to look at this blog also:
http://okbob.blogspot.com/#7449458148004287481
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.
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latency. He has configures a
revolving Master-Slave replication.
Perhaps you guys to share notes?
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To make changes
this is to create a named cursor of
the rows that you want to update, and then for each record call
UPDATE ... FROM ... WHERE CURRENT OF cursorname;
But why are you even having this problem to begin with? What you are
describing sounds like a database normalization problem.
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://www.commandprompt.com/blogs/joshua_drake/2007/08/how_many_rows_do_i_have_anyway/
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.
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of the postgresql.conf options are
shown as well as the compiler options used to build postgresql.
http://www.spec.org/jAppServer2004/results/res2007q3/jAppServer2004-20070703-00073.html
I hope this helps.
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statement to perform this operation.
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that everyone on the list can participate.
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://www.postgresql.org/docs/8.3/interactive/indexes-expressional.html
This way all expression using where lower( column ) = 'a'. will always
use an index scan.
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( v_ip_addr )) AS A( ip_addr )
LEFT JOIN Ip_addresses AS B
ON A.ip_addr = B.ip_addr
WHERE B.ip_addr IS NULL;
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you could handle the null by
passing DEFAULTS to you INSERT or UPDATE statements. I don't know if
this would work for you in this case.
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be encountering a bit of parallax. This shows both 38
and 36 *milliseconds*.
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on PGfoundry. This project is just
getting started and could benefit from a lot of development help.
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To make changes
and would work automatically with transaction ids and
tuple ids.
On the other hand, temporal tables/schemes are implemented by the data
modeller. Also the associated temporal operations on the data would be
handled by client DML designed to simulate temporal data operations.
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Richard Broersma
AS minutes
FROM yourtable;
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not commit or at least
will be ignored on most databases. We database brand has incorporated
a different set of features.
How do I identify them?
This should get you started :
http://www.postgresql.org/docs/8.3/interactive/features.html
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and,
the log snippet for each query( one from ODBC and one from PGadmin )
(I would attach these as a txt file)
the EXPLAIN ANALYZE of your query ( on run from the ODBC client and on
from PGadmin) (I would attach these as a txt file)
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compare them It should at least tell us what the server is doing
differently that is causing the query mis-behavior.
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back to the server. If it is trying
to perform the join on the client, it could be a big performance
killer.
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,
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interface to prefix
its select statements with explain analyze. And this, I don't thing
can be done. That's why you have to manually view the server logs to
see what query are being passed so that identify the problem queries
your self.
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the query duration when issued by ODBC in the postgresql
log to see if it is really taking 2 minutes.
It would be nice to see the snippet of the PG log showing this ODBC
query with associate duration times.
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where criteria you might have
GROUP BY I1.name, ...
HAVING COUNT(*) 3
ORDER BY I1.name;
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 7: You can help support the PostgreSQL project by donating at
http
--- On Mon, 1/7/08, Scott Marlowe [EMAIL PROTECTED] wrote:
select max(col1) from table
union all
select max(col2) from table
union all
select max(col3) from table
Would the following work also?
SELECT MAX( GREATEST( col1, col2, col3 ) )
FROM TABLE;
Regards,
Richard Broersma Jr
SELECT DISTINCT ON ( B.book_id, B.title ) B.book_id, B.title, A.Author
FROM Books AS B
INNER JOIN Authors AS A
ON A.book_id = B.book_id;
--- On Mon, 12/31/07, Josh [EMAIL PROTECTED] wrote:
From: Josh [EMAIL PROTECTED]
Subject: [SQL] Limit # of recs on inner join?
To:
components of the table that will also be needed in the SQL string that will be
executed?
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 2: Don't 'kill -9' the postmaster
.
If I didn't need to regularly provide this functionality, I would certainly use
an EAV history table.
Regards,
Richard Broersma Jr.
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TIP 1: if posting/reading through Usenet, please send an appropriate
subscribe
of PostgreSQL people on IRC:
http://www.postgresql.org/community/irc
Regards,
Richard Broersma Jr.
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TIP 4: Have you searched our list archives?
http://archives.postgresql.org
bottom posting
when we reply to an email. It is not preferred to put your replies at the top
of the email.
3) Try to use descriptive email subjects. For example, your email subject was
need help. This subject could be improved to say Need links to online
postgresql references.
Regards,
Richard
OS all platforms
and is easy to learn and use.
http://www.postgresql.org/docs/8.2/interactive/plpgsql.html
There are some nice examples in this documentation.
Your PGadmin will also have features to help the create these functions also.
Regards,
Richard Broersma Jr
the SQL prompt?
Regards,
Richard Broersma Jr.
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of functions into one?
Below is a sample of a typical logging trigger function.
Regards,
Richard Broersma Jr.
CREATE OR REPLACE FUNCTION project.log_managers_ops()
RETURNS trigger AS
$BODY$
BEGIN
IF TG_OP IN ( 'UPDATE', 'DELETE' ) THEN
UPDATE History.Managers AS M
that provide the same useful information as 'psql \d'. So instead,
I cheat:
start psql with the '-E' option to echo all sql strings psql sends to the
back-end server.
Simply copy and tailor each statement to suit your needs.
Regards,
Richard Broersma Jr.
---(end
--- On Mon, 12/10/07, Scott [EMAIL PROTECTED] wrote:
I am having trouble with an insert rule that also does an
update. It works
fine for a single insert but multiple inserts in a single
statement don't
behave as I expected.
Yup, that is the limitation of rules. They are only useful if you
Inventory
SET number = 0
FROM Things
WHERE Inventory.thing_fk = Things.thing_id
AND Things.color = 'red';
IIRC, Joe Celko referrers to this syntax as T-SQL.
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 9: In versions below 8.0
ON UPDATE CASCADE);
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 5: don't forget to increase your free space map settings
] .
This mailing list ( pgsql-sql@postgresql.org ) is really intended for
discussions of how to construct SQL queries to achieve desired results in a
PostgreSQL database.
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 2: Don't 'kill -9
/description#description
the only difference was that he was modeling employees and skillsets. IIRC,
the terminology for
the improved model was the full disjuctive model.
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 3: Have you checked
?
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 2: Don't 'kill -9' the postmaster
. Not a big deal but it
complicates things :-)
The veil project already does this.
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 3: Have you checked our extensive FAQ?
http://www.postgresql.org/docs/faq
with id_search 1 and
2 and 3. Therefore I use the following SQL query.
SELECT id_search
FROM Search_item
GROUP BY id_search
HAVING Count( * ) = 3
AND Max( id_item ) = 3
AND Min( id_item ) = 1;
Regards,
Richard Broersma Jr.
---(end of broadcast
/sql-createview.html
I've created large SQL scripts that employ:
DROP VIEW IF EXITS viewname;
CREATE VIEW ...
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 6: explain analyze is your friend
schema_name.view_name
was does it show as the definition of the column.
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 7: You can help support the PostgreSQL project by donating at
http://www.postgresql.org/about/donate
OOPS!
--- Richard Broersma Jr [EMAIL PROTECTED] wrote:
CREATE UNIQUE INDEX Only_one_row_true
ON Your_table ( featured )
WHERE featured = true;
Or if you want to only allow 1 featured article per catagory then:
CREATE UNIQUE INDEX Only_one_row_true_per_catagory
,
table1.col1,
CAST( NULL AS CHARACTER( 3 )),
table3.type2
FROM table1
JOIN table3 ON table3.fk_table1 = table1.id;
Would the above changes work?
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 7: You can help support
) a_id, b_id
FROM c ) AS c( a_id, b_id )
INNER JOIN a
ON c.a_id = a.id
INNER JOIN b
ON c.b_id = b.id;
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 6: explain analyze is your friend
oops...
I meant DISTINCT ON ( a_id )
--- Richard Broersma Jr [EMAIL PROTECTED] wrote:
SELECT a.x, b.x
FROM ( SELECT DISTINCT ON ( a_id ) a_id, b_id
^^
FROM c ) AS c( a_id, b_id )
INNER JOIN a
ON c.a_id = a.id
INNER JOIN b
[, ...] |
column_definition
[, ...] ) ]
Regards,
Richard Broersma Jr.
---(end of broadcast)---
TIP 6: explain analyze is your friend
--- Alvaro Herrera [EMAIL PROTECTED] wrote:
Any function declared as returning SETOF RECORD needs it, when you don't
use OUT params. Before OUT params existed, it was the only way to use
those functions.
Thanks everyone for the exposition! It makes sense.
Regards,
Richard Broersma Jr
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