Re: Is drop/restore trigger transactional?

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От
Merlin Moncure
Тема
Re: Is drop/restore trigger transactional?
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CAHyXU0zNGx4UR=Jnhr8pfs=W_qfeSnfLiOAMYbuAg00b7a6VTw@mail.gmail.com
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Is drop/restore trigger transactional? Craig James <cjames@emolecules.com>
Re: Is drop/restore trigger transactional? Merlin Moncure <mmoncure@gmail.com>
Re: Is drop/restore trigger transactional? Craig Ringer <ringerc@ringerc.id.au>
Re: Is drop/restore trigger transactional? Merlin Moncure <mmoncure@gmail.com>
Re: Is drop/restore trigger transactional? Matheus de Oliveira <matioli.matheus@gmail.com>
Re: Is drop/restore trigger transactional? Jeff Janes <jeff.janes@gmail.com>
Re: Is drop/restore trigger transactional? Craig James <cjames@emolecules.com>
Re: Is drop/restore trigger transactional? Samuel Gendler <sgendler@ideasculptor.com>
Re: Is drop/restore trigger transactional? Merlin Moncure <mmoncure@gmail.com>
Re: Is drop/restore trigger transactional? Jeff Janes <jeff.janes@gmail.com>
Re: Is drop/restore trigger transactional? Craig James <cjames@emolecules.com>
Re: Is drop/restore trigger transactional? Merlin Moncure <mmoncure@gmail.com>
Re: Is drop/restore trigger transactional? Scott Marlowe <scott.marlowe@gmail.com>
On Tue, Aug 7, 2012 at 5:29 PM, Craig Ringer  wrote:
> On 08/08/2012 04:15 AM, Merlin Moncure wrote:
>>
>> IF current_user = 'bulk_writer' THEN
>>    return new;
>> END IF;
>> 
>
> ... or re-create the trigger with a `WHEN` clause (only available in newer
> Pg versions, see CREATE TRIGGER) that excludes the migrated customer ID.
> You'd have to do it in a new tx to avoid locking the table for ages though.

yeah --- and, locking aside, I'd advise you not to do that anyways:
try and keep one block of code that enforces all the rules properly.
also, good deployment practices (especially in cases of security
sensitive environments) should have good firewalls between production
services and developer introduced code.

merlin
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