custom_variable_classes in 9.1 - Mailing list pgsql-sql

From Marcin Krawczyk
Subject custom_variable_classes in 9.1
Date
Msg-id CABnqL31QV1R415gVRTkmKGeonaGoY3VP++4NZs1qfwCeo=WX5Q@mail.gmail.com
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Responses Re: custom_variable_classes in 9.1  (Marcin Krawczyk <jankes.mk@gmail.com>)
List pgsql-sql
Hi list,

I'm using some global variables through custom_variable_classes facility. I've recently switched from 8.1 to 9.1 
and somewhere along the line the behavior of custom_variable_classes has changed - if the variable has not been set 
for a given session invoking it (SELECT current_setting('name.variable')) throws and error whereas it used to return 'unset' value. 
Is there a way to control this behavior or maybe call it in a different way without an error ?

If not I'll have to think of setting this at each session start, which in turn has me asking: is there a way to call an SQL script
at each user login ?

pozdrowienia
mk

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