On Jan15, 2014, at 10:08 , Marko Tiikkaja <ma...@joh.to> wrote:
> On 1/15/14 7:07 AM, Florian Pflug wrote:
>> On Jan15, 2014, at 01:34 , Marko Tiikkaja <ma...@joh.to> wrote:
>>> It's me again, trying to find a solution to the most common mistakes I 
>>> make.  This time it's accidental shadowing of variables, especially input 
>>> variables.  I've wasted several hours banging my head against the wall 
>>> while shouting "HOW CAN THIS VARIABLE ALWAYS BE NULL?".  I can't believe 
>>> I'm the only one.  To give you a rough idea on how it works:
>> 
>> I like this, but think that the option should be just called 
>> plpgsql.warnings or plpgsql.warn_on and accept a list of warnings to enable.
> 
> Hmm.  How about:
> 
>  plpgsql.warnings = 'all' # enable all warnings, defauls to the empty list, 
> i.e. no warnings
>  plpgsql.warnings = 'shadow, unused' # enable just "shadow" and "unused" 
> warnings

Looks good. For the #-directive, I think what we'd actually want there is to 
*disable* certain warnings for certain functions, i.e. "#silence_warning 
shadow" would disable the shadow warning. Enabling on a per-function basis 
doesn't seem all that useful - usually you'd develop with all warnings globally 
enabled anyway.

>  plpgsql.warnings_as_errors = on # defaults to off?

This I object to, for the same reasons I object to consistent_into. 

best regards,
Florian Pflug



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