[HACKERS] Column level triggers

2008-10-15 Thread Laurent Wandrebeck
Hi,

According to the documentation (
http://www.postgresql.org/docs/8.3/interactive/sql-createtrigger.html
), the feaure SQL allows triggers to fire on updates to specific
columns (e.g., AFTER UPDATE OF col1, col2) is missing.
After a bit of research, I found that this feature was in the TODO
list ( http://wiki.postgresql.org/wiki/Todo#Triggers ), and that a
patch was proposed on 2005/07.
Is it going to be implemented soon ? It would greatly help, IMHO, for
load, and simplify the write of plpgsql functions called by before
triggers.
Regards, and keep up the good work, that DBMS (mostly;) rocks !

Laurent

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Re: [HACKERS] Column level triggers

2008-10-15 Thread Decibel!

On Oct 15, 2008, at 3:21 AM, Laurent Wandrebeck wrote:

According to the documentation (
http://www.postgresql.org/docs/8.3/interactive/sql-createtrigger.html
), the feaure SQL allows triggers to fire on updates to specific
columns (e.g., AFTER UPDATE OF col1, col2) is missing.
After a bit of research, I found that this feature was in the TODO
list ( http://wiki.postgresql.org/wiki/Todo#Triggers ), and that a
patch was proposed on 2005/07.
Is it going to be implemented soon ? It would greatly help, IMHO, for
load, and simplify the write of plpgsql functions called by before
triggers.
Regards, and keep up the good work, that DBMS (mostly;) rocks !


If the patch was submitted back in 2005 and nothing's happened since  
then I'd say the author probably lost interest, which means that it  
won't be added until someone else gets interested in it. So I'd  
suggest either rolling up your sleeves or dangling a carrot (money)  
in front of some of the people that do consulting and back-end hacking.

--
Decibel!, aka Jim C. Nasby, Database Architect  [EMAIL PROTECTED]
Give your computer some brain candy! www.distributed.net Team #1828




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Re: [HACKERS] Column level triggers

2008-10-15 Thread Laurent Wandrebeck
2008/10/15 Decibel! [EMAIL PROTECTED]:

 If the patch was submitted back in 2005 and nothing's happened since then
 I'd say the author probably lost interest, which means that it won't be
 added until someone else gets interested in it. So I'd suggest either
 rolling up your sleeves or dangling a carrot (money) in front of some of the
 people that do consulting and back-end hacking.
Well I theorically could try to work on it in a couple months, once I
have finished the project I'm now on, which made me it hit that
limitation.
The main problem are:
- I know absolutely nothing of pg internals, as I'm just a pg user.
- The carrot I can propose as a person is likely to be too small.
@tom: the answers to your questions are of interest. I'd be glad to
know the answers too :)
Regards,
Laurent.

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