2010/3/4 Josh Berkus <j...@agliodbs.com>:
> All,
> Currently, the only way for admin scripts to get individual data items
> out of pg_controldata (such as the next XID or the catalog version) is
> via grep and regex. Given that people are going to be relying on some of
> this data for replication admin in the future, it seems past time to
> have a form of pg_controldata which either outputs machine-readable text
> (XML or JSON), or (my preference) takes options to output just the
> invididual items, e.g.

Huh? It's fixed with, you don't need regexps for that. Just split the
string apart.

Taking options for single fields might have a better usecase, of course :-)

> pg_controldata --catalog_version
> Even better would be the ability to get everything which is in
> pg_controldata currently as part of a system view in a running
> PostgreSQL; I can get most of them, but certainly not all.

+1 for having all the information available from inside the backend,
if that's technically possible (which I assume it should be)

 Magnus Hagander
 Me: http://www.hagander.net/
 Work: http://www.redpill-linpro.com/

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