Search Postgresql Archives

Re: Determining weather a query fired a trigger

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Tue, Apr 08, 2008 at 07:03:07AM -0700, Gordon wrote:
> But I do have one concern regarding performance.  The tsvector only
> needs to be updated if the title, summary, or keywords fields have
> changed.  If they are the same after an update then there is no need
> to run them.  Doing so would only cause a new tsvector to be generated
> when it wasn't necessary.

The usual trick is to check if the fields changed:

IF OLD.title != NEW.title OR OLD.summary != NEW.summary OR ... THEN
  update_tsvector()
END

> So what I want to know is, is there a way to tell if executing a query
> caused a trigger to fire?   I don't need anything fancy like notify
> and listen, I just want to see what the database is doing for testing
> purposes.  For example by looking at the logs and seeing what activity
> was caused by a given query.  Does this stuff get logged?

You can access the string sent by the client, but that won't help you
if the trigger was triggered within a stored procedure.

Have a nice day,
-- 
Martijn van Oosterhout   <kleptog@xxxxxxxxx>   http://svana.org/kleptog/
> Please line up in a tree and maintain the heap invariant while 
> boarding. Thank you for flying nlogn airlines.

Attachment: signature.asc
Description: Digital signature


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Postgresql Jobs]     [Postgresql Admin]     [Postgresql Performance]     [Linux Clusters]     [PHP Home]     [PHP on Windows]     [Kernel Newbies]     [PHP Classes]     [PHP Books]     [PHP Databases]     [Postgresql & PHP]     [Yosemite]
  Powered by Linux