Re: How to watch for schema changes

On 07/12/2018 09:16 AM, David G. Johnston wrote:
> On Thu, Jul 12, 2018 at 8:50 AM, Igor Korot <ikorot01(at)gmail(dot)com
> <mailto:ikorot01(at)gmail(dot)com>>wrote:
>
> > No, see:
> >
> > https://www.postgresql.org/docs/10/static/sql-createtrigger.html
> <https://www.postgresql.org/docs/10/static/sql-createtrigger.html>
> >
> > AFTER trigger on views are STATEMENT level only.
>
> But I do have access to the STATEMENT right?

Even if the below(David's explanation) did not hold there is nothing in:

https://www.postgresql.org/docs/10/static/plpgsql-trigger.html

that allows for capturing the statement.

>
>
> ​Yes, except nothing in the system actually attempts to directly target
> information_schema views with updates so there will never be a
> triggering event.​
>
> A normal trigger will not work - which is a large reason why event
> triggers were implemented.
>
> All of the alternative ideas (which I think was just log file parsing)
> you've decided are not viable for your need.  Thus you've seemingly
> eliminated all viable options and you now need to make a business decision.
>
> David J.
>
> p.s. Please remove the excess quoted material before hitting send.  At
> minimum anything after the last text that you write.​

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