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@gmail.com 
> <mailto:ikorot01@gmail.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.klaver@aklaver.com