Re: [HACKERS] Scan Keys

2006-07-05 Thread Greg Stark
Martijn van Oosterhout writes: > The info you need is in the operator class. In a sense you do need to > know the type of index you're scanning, not all indexes use the same > strategy numbers. Well what was tripping me up was figuring out the operator class. I just realized it's in the index's

Re: [HACKERS] lastval exposes information that currval does not

2006-07-05 Thread Joshua D. Drake
> I am well aware of what security definer means. The significant part of > this example is that lastval() will allow the caller to see the value of > a sequence where currval('seq') will not. This means that things which > might have been forbidden in 8.0 are now accessible in 8.1. > > It also me

Re: [HACKERS] lastval exposes information that currval does not

2006-07-05 Thread Phil Frost
On Wed, Jul 05, 2006 at 08:06:12PM -0400, Chris Campbell wrote: > On Jul 5, 2006, at 14:51, Phil Frost wrote: > > >test=# create function bump() returns bigint language sql security > >definer as $$ select nextval('private.seq'); $$; > > SECURITY DEFINER means that the function runs with the pe

Re: [HACKERS] lastval exposes information that currval does not

2006-07-05 Thread Chris Campbell
On Jul 5, 2006, at 14:51, Phil Frost wrote: test=# create function bump() returns bigint language sql security definer as $$ select nextval('private.seq'); $$; SECURITY DEFINER means that the function runs with the permissions of the role used to create the function (ran the CREATE FUNCTION

Re: [HACKERS] binds only for s,u,i,d?

2006-07-05 Thread Neil Conway
On Wed, 2006-07-05 at 06:55 -0400, Agent M wrote: > Like you said, it would make sense to have binds anywhere where there > are quoted strings- if only for anti-injection. There could be a "flat" > plan which simply did the string substitution with the proper escaping > at execute time. I don't

Re: [HACKERS] Scan Keys

2006-07-05 Thread Martijn van Oosterhout
On Wed, Jul 05, 2006 at 12:00:05PM -0400, Greg Stark wrote: > > I'm a bit confused about how scan keys work. Is there any simple way given a > list of Datums of the same type as the index tuple attributes to get all > matching index entries? This is for a non-system index. A scankey determines wh

Re: [HACKERS] buildfarm stats

2006-07-05 Thread Andrew Dunstan
Chris Mair wrote: but it is about 2Gb of data, so just putting a dump cleaned of personal data somewhere isn't really an option. I could arrange a dump without the diagnostics, in these 2 tables: system: < name | operating_system | os_version | compiler | compiler_version | architecture >

Re: [HACKERS] buildfarm stats

2006-07-05 Thread Chris Mair
> but it is about 2Gb of data, so just putting a dump cleaned of personal > data somewhere isn't really an option. > > I could arrange a dump without the diagnostics, in these 2 tables: > > system: < name | operating_system | os_version | compiler | > compiler_version | architecture > > build

[HACKERS] lastval exposes information that currval does not

2006-07-05 Thread Phil Frost
test=# create schema private; CREATE SCHEMA test=# create sequence private.seq; CREATE SEQUENCE test=# create function bump() returns bigint language sql security definer as $$ select nextval('private.seq'); $$; CREATE FUNCTION test=# revoke usage on schema private from pfrost; REVOKE test=# grant

Re: [HACKERS] binds only for s,u,i,d?

2006-07-05 Thread Andrew Dunstan
Greg Stark wrote: Neil Conway <[EMAIL PROTECTED]> writes: On Mon, 2006-07-03 at 23:28 -0400, Agent M wrote: Why can't preparation be used as a global anti-injection facility? All that work would need to be deferred to EXECUTE-time, which would largely defeat the purpose of se

Re: [HACKERS] binds only for s,u,i,d?

2006-07-05 Thread Greg Stark
Neil Conway <[EMAIL PROTECTED]> writes: > On Mon, 2006-07-03 at 23:28 -0400, Agent M wrote: > > > Why can't preparation be used as a global anti-injection facility? > > All that work would need to be deferred to EXECUTE-time, which would largely > defeat the purpose of server-side prepared stat

[HACKERS] Scan Keys

2006-07-05 Thread Greg Stark
I'm a bit confused about how scan keys work. Is there any simple way given a list of Datums of the same type as the index tuple attributes to get all matching index entries? This is for a non-system index. It seems like the only place in the code where non-system index lookups are done is nodeInd

Re: [HACKERS] update/insert,

2006-07-05 Thread Joshua D. Drake
> > Which is faster will probably depends on what is more common in your DB: > > row already exists or not. If you know that 99% of the time the row > > will exist, the update will probably be faster because you'll only > > execute one query 99% of the time. > > OK, but the point of the question i

Re: [HACKERS] update/insert,

2006-07-05 Thread mark
On Wed, Jul 05, 2006 at 04:59:52PM +0200, Zeugswetter Andreas DCP SD wrote: > > OK, but the point of the question is that constantly updating > > a single row steadily degrades performance, would > > delete/insery also do the same? > Yes, there is currently no difference (so you should do the upd

Re: [HACKERS] update/insert,

2006-07-05 Thread Zeugswetter Andreas DCP SD
> OK, but the point of the question is that constantly updating > a single row steadily degrades performance, would > delete/insery also do the same? Yes, there is currently no difference (so you should do the update). Of course performance only degrades if vaccuum is not setup correctly. Andr

Re: [HACKERS] update/insert,

2006-07-05 Thread Andrew Dunstan
Mark Woodward wrote: On Tue, Jul 04, 2006 at 11:59:27AM +0200, Zdenek Kotala wrote: Mark, I don't know how it will exactly works in postgres but my expectations are: Mark Woodward wrote: Is there a difference in PostgreSQL performance between these two different strategies: if(!

Re: [HACKERS] update/insert,

2006-07-05 Thread Mark Woodward
> On Tue, Jul 04, 2006 at 11:59:27AM +0200, Zdenek Kotala wrote: >> Mark, >> I don't know how it will exactly works in postgres but my expectations >> are: >> >> Mark Woodward wrote: >> >Is there a difference in PostgreSQL performance between these two >> >different strategies: >> > >> > >> >if(!ex

Re: [HACKERS] buildfarm stats

2006-07-05 Thread Andrew Dunstan
Joshua D. Drake wrote: On Tuesday 04 July 2006 22:14, Chris Mair wrote: Thanks for the stats Andrew. Out of interest, can you easily tabulate the number of failures against OS? Or, more generally, even put a dump of the DB (without personal infos of course :) somewhere? Bye, Chris.

[HACKERS] set search_path in dump output considered harmful

2006-07-05 Thread Phil Frost
I've recently migrated one of my databases to using veil. This involved creating a 'private' schema and moving all tables to it. Functions remain in public, and secured views are created there which can be accessed by normal users. In doing so, I found to my extreme displeasure that although the d

Re: [HACKERS] passing parameters to CREATE INDEX

2006-07-05 Thread Tom Lane
Teodor Sigaev <[EMAIL PROTECTED]> writes: > can add to pg_opclass's definition method/parameter name and create some API > (may be, index specific) to propagate parameter's to module's interface > functions to index. Huh? You can get them from the index's Relation structure. I don't think ther

Re: [HACKERS] passing parameters to CREATE INDEX

2006-07-05 Thread Teodor Sigaev
http://archives.postgresql.org/pgsql-hackers/2005-09/msg00851.php Just to follow up on the discussion of that thread: what's been implemented is a way to store arbitrary name=value strings in an index's pg_class entry, and to make these available in a pre-parsed form through the index relcache e

Re: [HACKERS] The problem of an inline definition by construction in

2006-07-05 Thread Robert Max Kramer
Hello, I've got problems building the client libraries. It seems that there this problem is already known and dicussed this mailing list earlier: (snip) Patch applied to CVS HEAD and 8.1.X. Thanks. Borland CC also needed this change, so I modified your patch appropriately. --

Re: [HACKERS] Creating custom Win32 installer

2006-07-05 Thread Dave Page
> -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > Victor B. Wagner > Sent: 05 July 2006 12:28 > To: pgsql-hackers@postgresql.org > Subject: [HACKERS] Creating custom Win32 installer > > I need to build custom win32 binary package for PostgreSQL.

[HACKERS] Creating custom Win32 installer

2006-07-05 Thread Victor B. Wagner
I need to build custom win32 binary package for PostgreSQL. I've downloaded source for PGinstaller but found them hard to understand - WiX toolkit and MSI is totally alien territory for me. Things I need to modify: 1. Exclude all unneccessary extensions such as PostGIS 2. Add some other extensio

Re: [HACKERS] update/insert, delete/insert efficiency WRT vacuum

2006-07-05 Thread Hannu Krosing
Ühel kenal päeval, T, 2006-07-04 kell 14:53, kirjutas Zeugswetter Andreas DCP SD: > > > >Is there a difference in PostgreSQL performance between these two > > > >different strategies: > > > > > > > > > > > >if(!exec("update foo set bar='blahblah' where name = 'xx'")) > > > >exec("insert into f

Re: [HACKERS] binds only for s,u,i,d?

2006-07-05 Thread Neil Conway
On Mon, 2006-07-03 at 23:28 -0400, Agent M wrote: > Why are only select, insert, update, and delete supported for $X binds? This is a property of the way prepared statements are implemented. Prepared statement parameters can be used in the place of expressions in optimizeable statements (the actua