Re: Tables(s) that feed pg_controldata

On 12/10/2018 11:50 AM, Michael Paquier wrote:
> On Sun, Dec 09, 2018 at 08:10:57PM -0600, Ron wrote:
>> On 12/09/2018 07:51 PM, Ian Barwick wrote:
>>> but you're out of luck for 9.2. The only option to query the desired
>>> values via
>>> SQL would be to write an extension which reads pg_controldata
>>> (possibly as a backport of the above-mentioned functions).
>>
>> Thanks.  grep(1) and cut(1) make an adequate work-around.
> 
> Perhaps.  Even with that, writing an extension for 9.2 would require
> copy-pasting a lot of code from pg_controldata.c and taking as well the
> code which has been introduced for the various control functions.
> Dirty, still doable. 

I've got some code which does just that to read pg_control as far
back as 9.3, and it is indeed not pretty ;).


Regards

Ian Barwick


-- 
  Ian Barwick                   http://www.2ndQuadrant.com/
  PostgreSQL Development, 24x7 Support, Training & Services