Re: Way to quickly detect if database tables/columns/etc. were modified?

On 10/31/2016 07:17 AM, Melvin Davidson wrote:
>
>
> On Mon, Oct 31, 2016 at 9:48 AM, Karsten Hilbert
> <Karsten(dot)Hilbert(at)gmx(dot)net <mailto:Karsten(dot)Hilbert(at)gmx(dot)net>> wrote:
>
> On Mon, Oct 31, 2016 at 09:14:07AM -0400, Melvin Davidson wrote:
>
> >> Maybe create an event trigger that updates a simple table with the last
> >> modification time or sends a notification?
> ...
> > That would certainly work, but
> > the problem is, that trigger would have to be created for every table in
> > the database. When you have more than a couple dozen tables, as in
> > hundreds, it becsmes a huge undertaking.*--
>
> Well, it could be generated.
>
> Karsten
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>
>>Well, it could be generated.
> True, but it still is more code to maintain, whereas I maintain the
> addition addition of one column in pg_class and pg_attribute with a
> default of now()
> would make more sense. That being said, there were so many naysayers
> grasping at corner cases the last time I brought this up I have given up
> pursuing it.

For those that want to see the previous discussions and the non-trivial
issues that where raised:

https://www.postgresql.org/message-id/CANu8FizWg8GMSmm_d8X0B6uYi7o535f3vqMD3nqFXqrrYB6huA%40mail.gmail.com

https://www.postgresql.org/message-id/mbrynjrrq6ckoxap20n2gqx4.1461185428476%40email.android.com

>
> --
> *Melvin Davidson*
> I reserve the right to fantasize. Whether or not you
> wish to share my fantasy is entirely up to you.

--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com