Re: Execute a function upon a connection made/closed

am Fri, dem 13.10.2006, um 12:47:09 +0300 mailte Uyelik folgendes:
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> A. Kretschmer wrote, On 13.10.2006 12:32:
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> am Fri, dem 13.10.2006, um 12:25:38 +0300 mailte Uyelik folgendes:
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>
> Hi,
> Is there any way to execute a function upon a new connection made or existing
> one closed?
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> IIRC no, but you can set variables, perhaps this will help you.
> ALTER name SET parameter { TO | = } { value | DEFAULT }
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> Do you mean; after a connection made by a client, client first set a variable?
> I need a server side solution?

No, you can define per user server-side variables like search_path.
Independent of the client-program, every times the user logged in this
variable set. But i don't know a solution to call a function on
login/logout, sorry.

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> Is active connections info stored on a table or (?) ?
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> In a system-view, pg_stat_activity. You can select from there.
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> Yes, i can query this view, but i need to do some thing on database upon a new
> connection info added to this (view) or deleted. But this is a view and i cant
> add trigger? More deeply where is the connection info stored?

IIRC, it's not possible to create a TRIGGER on system-tables.
Read more about this:
http://www.postgresql.org/docs/8.1/interactive/monitoring-stats.html

HTH, Andreas
--
Andreas Kretschmer
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